/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:12:35,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:12:35,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:12:35,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:12:35,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:12:35,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:12:35,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:12:35,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:12:35,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:12:35,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:12:35,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:12:35,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:12:35,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:12:35,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:12:35,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:12:35,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:12:35,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:12:35,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:12:35,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:12:35,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:12:35,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:12:35,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:12:35,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:12:35,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:12:35,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:12:35,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:12:35,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:12:35,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:12:35,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:12:35,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:12:35,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:12:35,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:12:35,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:12:35,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:12:35,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:12:35,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:12:35,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:12:35,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:12:35,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:12:35,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:12:35,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:12:35,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:12:35,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:12:35,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:12:35,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:12:35,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:12:35,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:12:35,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:12:35,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:12:35,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:12:35,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:12:35,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:12:35,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:12:35,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:12:35,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:12:35,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:12:35,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:12:35,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:12:35,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:12:35,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:12:35,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:12:35,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:12:35,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:12:35,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:35,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:12:35,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:12:35,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:12:35,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:12:36,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:12:36,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:12:36,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:12:36,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:12:36,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:12:36,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:12:36,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:12:36,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:12:36,527 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:12:36,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 11:12:36,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dce87bb8/5150f0c3c2734e299d8e30e883415edd/FLAG9035e0583 [2020-09-25 11:12:37,240 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:12:37,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 11:12:37,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dce87bb8/5150f0c3c2734e299d8e30e883415edd/FLAG9035e0583 [2020-09-25 11:12:37,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dce87bb8/5150f0c3c2734e299d8e30e883415edd [2020-09-25 11:12:37,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:12:37,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:12:37,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:37,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:12:37,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:12:37,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d5d851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37, skipping insertion in model container [2020-09-25 11:12:37,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:12:37,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:12:38,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:38,117 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:12:38,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:38,220 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:12:38,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38 WrapperNode [2020-09-25 11:12:38,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:38,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:12:38,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:12:38,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:12:38,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... [2020-09-25 11:12:38,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:12:38,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:12:38,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:12:38,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:12:38,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:12:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:12:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:12:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:12:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:12:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:12:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:12:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:12:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:12:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:12:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:12:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:12:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:12:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:12:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:12:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:12:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:12:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:12:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:12:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:12:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:12:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:12:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:12:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:12:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:12:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:12:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:12:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:12:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:12:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:12:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:12:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:12:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:12:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:12:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:12:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:12:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:12:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:12:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:12:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:12:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:12:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:12:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:12:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:12:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:12:38,405 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:12:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:12:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:12:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:12:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:12:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:12:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:12:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:12:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:12:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:12:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:12:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:12:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:12:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:12:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:12:39,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:12:39,005 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-25 11:12:39,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:39 BoogieIcfgContainer [2020-09-25 11:12:39,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:12:39,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:12:39,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:12:39,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:12:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:12:37" (1/3) ... [2020-09-25 11:12:39,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:39, skipping insertion in model container [2020-09-25 11:12:39,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:38" (2/3) ... [2020-09-25 11:12:39,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:39, skipping insertion in model container [2020-09-25 11:12:39,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:39" (3/3) ... [2020-09-25 11:12:39,021 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-25 11:12:39,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:12:39,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 11:12:39,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 11:12:39,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:12:39,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:12:39,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:12:39,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:12:39,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:12:39,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:12:39,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:12:39,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:12:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 11:12:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 11:12:39,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:39,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:39,144 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:39,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-25 11:12:39,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:39,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840110195] [2020-09-25 11:12:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:40,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:12:40,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 11:12:40,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:40,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:12:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:12:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:12:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:40,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:12:40,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:40,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:40,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:40,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840110195] [2020-09-25 11:12:40,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:40,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:12:40,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43687428] [2020-09-25 11:12:40,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:12:40,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:12:40,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:12:40,292 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 6 states. [2020-09-25 11:12:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:40,768 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-09-25 11:12:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:12:40,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 11:12:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:40,786 INFO L225 Difference]: With dead ends: 272 [2020-09-25 11:12:40,786 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 11:12:40,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:12:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 11:12:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2020-09-25 11:12:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 11:12:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-25 11:12:40,853 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 26 [2020-09-25 11:12:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:40,853 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-25 11:12:40,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:12:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-25 11:12:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 11:12:40,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:40,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:40,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:12:40,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-25 11:12:40,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:40,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786186805] [2020-09-25 11:12:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:40,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:12:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-09-25 11:12:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:41,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:12:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:12:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:12:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:41,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:41,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786186805] [2020-09-25 11:12:41,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:41,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 11:12:41,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766021553] [2020-09-25 11:12:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:12:41,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:41,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:12:41,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:12:41,852 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 10 states. [2020-09-25 11:12:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:42,438 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2020-09-25 11:12:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:12:42,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-25 11:12:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:42,443 INFO L225 Difference]: With dead ends: 173 [2020-09-25 11:12:42,443 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 11:12:42,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:12:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 11:12:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 86. [2020-09-25 11:12:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 11:12:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-25 11:12:42,469 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 27 [2020-09-25 11:12:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:42,470 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-25 11:12:42,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:12:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-25 11:12:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:12:42,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:42,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:42,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:12:42,479 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-25 11:12:42,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:42,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412831360] [2020-09-25 11:12:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:44,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:12:44,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-09-25 11:12:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:44,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:12:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:12:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:44,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:44,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:44,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:12:44,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:44,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:44,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:44,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:12:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:44,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412831360] [2020-09-25 11:12:44,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:44,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 11:12:44,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621416153] [2020-09-25 11:12:44,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:12:44,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:12:44,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:12:44,644 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 14 states. [2020-09-25 11:12:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:45,724 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-25 11:12:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:12:45,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 11:12:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:45,729 INFO L225 Difference]: With dead ends: 223 [2020-09-25 11:12:45,730 INFO L226 Difference]: Without dead ends: 220 [2020-09-25 11:12:45,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:12:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-25 11:12:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 106. [2020-09-25 11:12:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 11:12:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 11:12:45,759 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 35 [2020-09-25 11:12:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:45,759 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 11:12:45,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:12:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 11:12:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:12:45,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:45,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:45,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:12:45,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:45,764 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-25 11:12:45,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:45,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077172318] [2020-09-25 11:12:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:46,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:46,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:12:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-09-25 11:12:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:46,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:12:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:46,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:12:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:12:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:47,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077172318] [2020-09-25 11:12:47,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:47,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 11:12:47,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614813148] [2020-09-25 11:12:47,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:12:47,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:12:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:12:47,015 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 14 states. [2020-09-25 11:12:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:47,934 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2020-09-25 11:12:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:12:47,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 11:12:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:47,936 INFO L225 Difference]: With dead ends: 233 [2020-09-25 11:12:47,936 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 11:12:47,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:12:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 11:12:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-09-25 11:12:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 11:12:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-25 11:12:47,954 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 35 [2020-09-25 11:12:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:47,954 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-25 11:12:47,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:12:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-25 11:12:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 11:12:47,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:47,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:47,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:12:47,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-25 11:12:47,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:47,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478001806] [2020-09-25 11:12:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:12:47,984 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:12:47,985 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:12:47,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:12:48,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:12:48 BoogieIcfgContainer [2020-09-25 11:12:48,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:12:48,016 INFO L168 Benchmark]: Toolchain (without parser) took 10491.26 ms. Allocated memory was 141.0 MB in the beginning and 307.2 MB in the end (delta: 166.2 MB). Free memory was 101.0 MB in the beginning and 259.1 MB in the end (delta: -158.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:12:48,017 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:12:48,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.51 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 171.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:12:48,019 INFO L168 Benchmark]: Boogie Preprocessor took 74.62 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 168.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:12:48,020 INFO L168 Benchmark]: RCFGBuilder took 714.66 ms. Allocated memory is still 205.0 MB. Free memory was 168.6 MB in the beginning and 117.2 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:12:48,021 INFO L168 Benchmark]: TraceAbstraction took 9000.26 ms. Allocated memory was 205.0 MB in the beginning and 307.2 MB in the end (delta: 102.2 MB). Free memory was 117.2 MB in the beginning and 259.1 MB in the end (delta: -141.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:12:48,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.51 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 171.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.62 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 168.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 714.66 ms. Allocated memory is still 205.0 MB. Free memory was 168.6 MB in the beginning and 117.2 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9000.26 ms. Allocated memory was 205.0 MB in the beginning and 307.2 MB in the end (delta: 102.2 MB). Free memory was 117.2 MB in the beginning and 259.1 MB in the end (delta: -141.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 270 SDtfs, 1697 SDslu, 1344 SDs, 0 SdLazy, 1311 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 347 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 32088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...