/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:14:31,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:14:31,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:14:31,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:14:31,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:14:31,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:14:31,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:14:31,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:14:31,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:14:31,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:14:31,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:14:31,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:14:31,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:14:31,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:14:31,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:14:31,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:14:31,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:14:31,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:14:31,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:14:31,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:14:31,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:14:31,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:14:31,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:14:31,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:14:31,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:14:31,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:14:31,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:14:31,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:14:31,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:14:31,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:14:31,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:14:31,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:14:31,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:14:31,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:14:31,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:14:31,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:14:31,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:14:31,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:14:31,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:14:31,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:14:31,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:14:31,667 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 [2020-08-22 02:14:31,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:14:31,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:14:31,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:14:31,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:14:31,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:14:31,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:14:31,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:14:31,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:14:31,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:14:31,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:14:31,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:14:31,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:14:31,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:14:31,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:14:31,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:14:31,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:14:31,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:14:31,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:14:31,730 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:14:32,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:14:32,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:14:32,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:14:32,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:14:32,025 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:14:32,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-08-22 02:14:32,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c95eb40/61bb03ed089b4810a49d5f905593cc11/FLAG732dc477c [2020-08-22 02:14:32,560 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:14:32,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-08-22 02:14:32,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c95eb40/61bb03ed089b4810a49d5f905593cc11/FLAG732dc477c [2020-08-22 02:14:32,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c95eb40/61bb03ed089b4810a49d5f905593cc11 [2020-08-22 02:14:32,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:14:32,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:14:32,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:14:32,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:14:32,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:14:32,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:14:32" (1/1) ... [2020-08-22 02:14:32,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:32, skipping insertion in model container [2020-08-22 02:14:32,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:14:32" (1/1) ... [2020-08-22 02:14:32,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:14:32,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:14:33,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:14:33,522 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:14:33,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:14:33,614 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:14:33,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33 WrapperNode [2020-08-22 02:14:33,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:14:33,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:14:33,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:14:33,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:14:33,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (1/1) ... [2020-08-22 02:14:33,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:14:33,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:14:33,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:14:33,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:14:33,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (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 [2020-08-22 02:14:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:14:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:14:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 02:14:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 02:14:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 02:14:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 02:14:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 02:14:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 02:14:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 02:14:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 02:14:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 02:14:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 02:14:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 02:14:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 02:14:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 02:14:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 02:14:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 02:14:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 02:14:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 02:14:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 02:14:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 02:14:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 02:14:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 02:14:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 02:14:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:14:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:14:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:14:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:14:34,125 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 02:14:34,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:14:34,310 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 02:14:34,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:14:34 BoogieIcfgContainer [2020-08-22 02:14:34,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:14:34,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:14:34,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:14:34,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:14:34,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:14:32" (1/3) ... [2020-08-22 02:14:34,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee92688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:14:34, skipping insertion in model container [2020-08-22 02:14:34,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:33" (2/3) ... [2020-08-22 02:14:34,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee92688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:14:34, skipping insertion in model container [2020-08-22 02:14:34,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:14:34" (3/3) ... [2020-08-22 02:14:34,322 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-08-22 02:14:34,333 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:14:34,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:14:34,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:14:34,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:14:34,376 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:14:34,376 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:14:34,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:14:34,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:14:34,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:14:34,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:14:34,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:14:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-22 02:14:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 02:14:34,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:34,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:34,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash 661731879, now seen corresponding path program 1 times [2020-08-22 02:14:34,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:34,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583991857] [2020-08-22 02:14:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:34,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583991857] [2020-08-22 02:14:34,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:34,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:34,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217500784] [2020-08-22 02:14:34,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:34,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:34,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:34,634 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-22 02:14:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:34,759 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2020-08-22 02:14:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:34,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-22 02:14:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:34,787 INFO L225 Difference]: With dead ends: 54 [2020-08-22 02:14:34,787 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 02:14:34,791 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 [2020-08-22 02:14:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 02:14:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-22 02:14:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 02:14:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-08-22 02:14:34,834 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2020-08-22 02:14:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:34,834 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-08-22 02:14:34,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-08-22 02:14:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 02:14:34,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:34,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:34,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:14:34,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:34,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1973627133, now seen corresponding path program 1 times [2020-08-22 02:14:34,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:34,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707536620] [2020-08-22 02:14:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:34,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707536620] [2020-08-22 02:14:34,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:34,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:14:34,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909181656] [2020-08-22 02:14:34,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:14:34,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:34,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:14:34,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:14:34,959 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 5 states. [2020-08-22 02:14:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:35,075 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-22 02:14:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:14:35,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-22 02:14:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:35,077 INFO L225 Difference]: With dead ends: 44 [2020-08-22 02:14:35,077 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 02:14:35,078 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 [2020-08-22 02:14:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 02:14:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-22 02:14:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 02:14:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-08-22 02:14:35,086 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2020-08-22 02:14:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:35,086 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-08-22 02:14:35,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:14:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-08-22 02:14:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:14:35,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:35,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:35,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:14:35,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:35,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1721544590, now seen corresponding path program 1 times [2020-08-22 02:14:35,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:35,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915624574] [2020-08-22 02:14:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:35,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915624574] [2020-08-22 02:14:35,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:35,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:14:35,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290977460] [2020-08-22 02:14:35,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:14:35,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:35,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:14:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:14:35,169 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2020-08-22 02:14:35,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:35,264 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-08-22 02:14:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:14:35,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 02:14:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:35,267 INFO L225 Difference]: With dead ends: 51 [2020-08-22 02:14:35,267 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 02:14:35,268 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 [2020-08-22 02:14:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 02:14:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-08-22 02:14:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 02:14:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-08-22 02:14:35,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20 [2020-08-22 02:14:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:35,277 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-08-22 02:14:35,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:14:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-08-22 02:14:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 02:14:35,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:35,279 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:35,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:14:35,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash -918584693, now seen corresponding path program 1 times [2020-08-22 02:14:35,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:35,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963222507] [2020-08-22 02:14:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:35,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963222507] [2020-08-22 02:14:35,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:35,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:14:35,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024276097] [2020-08-22 02:14:35,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:14:35,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:14:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:14:35,376 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 7 states. [2020-08-22 02:14:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:35,522 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2020-08-22 02:14:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:14:35,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-08-22 02:14:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:35,524 INFO L225 Difference]: With dead ends: 74 [2020-08-22 02:14:35,524 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 02:14:35,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:14:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 02:14:35,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-08-22 02:14:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 02:14:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-08-22 02:14:35,533 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21 [2020-08-22 02:14:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:35,533 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-08-22 02:14:35,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:14:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2020-08-22 02:14:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 02:14:35,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:35,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:35,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:14:35,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash -743556192, now seen corresponding path program 1 times [2020-08-22 02:14:35,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:35,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275514041] [2020-08-22 02:14:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:14:35,576 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:14:35,577 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:14:35,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:14:35,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:14:35 BoogieIcfgContainer [2020-08-22 02:14:35,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:14:35,602 INFO L168 Benchmark]: Toolchain (without parser) took 2708.95 ms. Allocated memory was 147.8 MB in the beginning and 235.4 MB in the end (delta: 87.6 MB). Free memory was 102.5 MB in the beginning and 121.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,603 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.56 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 171.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,604 INFO L168 Benchmark]: Boogie Preprocessor took 64.89 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,605 INFO L168 Benchmark]: RCFGBuilder took 633.80 ms. Allocated memory is still 205.5 MB. Free memory was 168.7 MB in the beginning and 121.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,606 INFO L168 Benchmark]: TraceAbstraction took 1283.85 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 225.1 kB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:35,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.56 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 171.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.89 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 168.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 633.80 ms. Allocated memory is still 205.5 MB. Free memory was 168.7 MB in the beginning and 121.8 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1283.85 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 225.1 kB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 124 SDtfs, 28 SDslu, 164 SDs, 0 SdLazy, 245 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 3646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...