/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:24:26,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:24:26,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:24:26,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:24:26,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:24:26,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:24:26,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:24:26,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:24:26,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:24:26,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:24:26,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:24:26,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:24:26,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:24:26,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:24:26,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:24:26,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:24:26,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:24:26,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:24:26,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:24:26,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:24:26,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:24:26,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:24:26,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:24:26,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:24:26,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:24:26,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:24:26,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:24:26,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:24:26,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:24:26,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:24:26,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:24:26,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:24:26,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:24:26,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:24:26,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:24:26,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:24:26,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:24:26,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:24:26,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:24:26,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:24:26,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:24:26,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:24:26,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:24:26,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:24:26,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:24:26,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:24:26,637 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:24:26,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:24:26,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:24:26,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:24:26,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:24:26,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:24:26,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:24:26,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:24:26,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:24:26,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:24:26,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:24:26,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:24:26,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:26,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:24:26,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:24:26,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:24:26,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:24:26,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:24:26,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:24:26,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:24:26,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:24:27,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:24:27,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:24:27,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:24:27,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:24:27,187 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:24:27,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-21 11:24:27,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4875dac/c4d261d1748d43359ae368f8c6a84312/FLAGee669f4b6 [2020-09-21 11:24:27,981 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:24:27,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-21 11:24:27,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4875dac/c4d261d1748d43359ae368f8c6a84312/FLAGee669f4b6 [2020-09-21 11:24:28,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b4875dac/c4d261d1748d43359ae368f8c6a84312 [2020-09-21 11:24:28,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:24:28,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:24:28,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:28,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:24:28,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:24:28,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c56d103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28, skipping insertion in model container [2020-09-21 11:24:28,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:24:28,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:24:28,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:28,801 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:24:28,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:28,907 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:24:28,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28 WrapperNode [2020-09-21 11:24:28,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:28,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:24:28,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:24:28,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:24:28,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... [2020-09-21 11:24:28,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:24:28,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:24:28,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:24:28,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:24:28,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:24:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:24:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:24:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:24:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:24:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:24:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:24:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:24:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:24:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:24:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:24:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:24:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:24:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:24:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:24:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:24:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:24:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:24:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:24:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:24:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:24:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:24:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:24:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:24:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:24:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:24:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:24:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:24:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:24:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:24:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:24:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:24:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:24:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:24:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:24:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:24:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:24:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:24:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:24:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:24:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:24:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:24:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:24:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:24:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:24:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:24:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:24:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:24:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:24:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:24:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:24:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:24:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:24:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:24:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:24:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:24:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:24:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:24:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:24:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:24:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:24:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:24:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:24:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:24:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:24:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:24:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:24:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:24:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:24:29,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:24:29,733 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-21 11:24:29,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:29 BoogieIcfgContainer [2020-09-21 11:24:29,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:24:29,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:24:29,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:24:29,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:24:29,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:28" (1/3) ... [2020-09-21 11:24:29,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e75c449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:29, skipping insertion in model container [2020-09-21 11:24:29,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:28" (2/3) ... [2020-09-21 11:24:29,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e75c449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:29, skipping insertion in model container [2020-09-21 11:24:29,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:29" (3/3) ... [2020-09-21 11:24:29,750 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-09-21 11:24:29,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:24:29,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-21 11:24:29,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-21 11:24:29,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:24:29,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:24:29,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:24:29,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:24:29,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:24:29,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:24:29,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:24:29,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:24:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-21 11:24:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 11:24:29,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:29,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:29,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:29,864 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-09-21 11:24:29,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:29,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098078591] [2020-09-21 11:24:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,032 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 11:24:30,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:24:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,111 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:30,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:30,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:30,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098078591] [2020-09-21 11:24:30,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:30,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:24:30,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567754538] [2020-09-21 11:24:30,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:24:30,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:30,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:24:30,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:24:30,162 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-21 11:24:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:30,295 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2020-09-21 11:24:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:24:30,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-21 11:24:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:30,329 INFO L225 Difference]: With dead ends: 59 [2020-09-21 11:24:30,329 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 11:24:30,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:24:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 11:24:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 11:24:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:24:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-09-21 11:24:30,380 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2020-09-21 11:24:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:30,381 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-09-21 11:24:30,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:24:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-09-21 11:24:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 11:24:30,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:30,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:30,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:24:30,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 622671912, now seen corresponding path program 1 times [2020-09-21 11:24:30,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:30,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835117373] [2020-09-21 11:24:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,441 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 11:24:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:24:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:24:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:24:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,509 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,509 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,510 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:30,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835117373] [2020-09-21 11:24:30,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:30,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:24:30,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307162642] [2020-09-21 11:24:30,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:24:30,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:24:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:30,525 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-09-21 11:24:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:30,670 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-09-21 11:24:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:24:30,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-21 11:24:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:30,672 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:24:30,672 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 11:24:30,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 11:24:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-09-21 11:24:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 11:24:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-09-21 11:24:30,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-09-21 11:24:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:30,680 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-09-21 11:24:30,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:24:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-09-21 11:24:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:24:30,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:30,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:30,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:24:30,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-09-21 11:24:30,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:30,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734176689] [2020-09-21 11:24:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,753 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,754 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,754 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:24:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 11:24:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:24:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:30,860 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:30,860 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:30,860 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:30,861 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:30,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:30,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734176689] [2020-09-21 11:24:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:30,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:24:30,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766664476] [2020-09-21 11:24:30,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:24:30,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:30,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:24:30,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:24:30,879 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-09-21 11:24:31,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:31,061 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-21 11:24:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:24:31,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-21 11:24:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:31,063 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:24:31,063 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 11:24:31,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 11:24:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-09-21 11:24:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:24:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-21 11:24:31,072 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-09-21 11:24:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:31,073 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-21 11:24:31,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:24:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-21 11:24:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:24:31,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:31,074 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:31,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:24:31,074 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:31,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-09-21 11:24:31,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:31,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857110725] [2020-09-21 11:24:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:31,231 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:31,231 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:31,231 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:24:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-21 11:24:31,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:24:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:24:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:31,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:31,392 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:31,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:31,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:31,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:31,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:24:31,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857110725] [2020-09-21 11:24:31,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:31,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:24:31,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675588460] [2020-09-21 11:24:31,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:24:31,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:31,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:24:31,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:24:31,409 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-09-21 11:24:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:31,669 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-09-21 11:24:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:24:31,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-09-21 11:24:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:31,671 INFO L225 Difference]: With dead ends: 40 [2020-09-21 11:24:31,671 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 11:24:31,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:24:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 11:24:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2020-09-21 11:24:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 11:24:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-09-21 11:24:31,678 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-09-21 11:24:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:31,679 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-09-21 11:24:31,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:24:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-09-21 11:24:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:24:31,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:31,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:31,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:24:31,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:31,681 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-09-21 11:24:31,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:31,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73079745] [2020-09-21 11:24:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:31,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:24:31,708 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Something went wrong, the set of all crits should be unsatisfiable! at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.Shrinking.shrink(Shrinking.java:196) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.shrinkVanillaUnsatCore(MusEnumerationScript.java:414) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:205) 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:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-21 11:24:31,715 INFO L168 Benchmark]: Toolchain (without parser) took 3502.94 ms. Allocated memory was 140.5 MB in the beginning and 237.0 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 95.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,716 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.74 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.4 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,718 INFO L168 Benchmark]: Boogie Preprocessor took 71.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,719 INFO L168 Benchmark]: RCFGBuilder took 758.74 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 122.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,720 INFO L168 Benchmark]: TraceAbstraction took 1971.20 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 121.4 MB in the beginning and 95.1 MB in the end (delta: 26.3 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:31,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.74 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 170.4 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.46 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 167.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 758.74 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 122.4 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1971.20 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 121.4 MB in the beginning and 95.1 MB in the end (delta: 26.3 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Something went wrong, the set of all crits should be unsatisfiable! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Something went wrong, the set of all crits should be unsatisfiable!: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.Shrinking.shrink(Shrinking.java:196) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...