/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=0.1 --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 10:05:20,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:20,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:20,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:20,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:20,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:20,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:20,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:20,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:20,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:20,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:20,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:20,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:20,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:20,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:20,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:20,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:20,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:20,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:20,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:20,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:20,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:20,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:20,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:20,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:20,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:20,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:20,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:20,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:20,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:20,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:20,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:20,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:20,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:20,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:20,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:20,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:20,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:20,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:20,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:20,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:20,393 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 10:05:20,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:20,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:20,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:20,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:20,421 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:20,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:20,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:20,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:20,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:20,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:20,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:20,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:20,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:20,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:20,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:20,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:20,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:20,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:20,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:20,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:20,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:20,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:20,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:20,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:20,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:20,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:20,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:20,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:20,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:20,426 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:05:20,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:20,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:20,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:20,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:20,989 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:20,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 10:05:21,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c58cf34/09ace14cd5304953b0f6aab3ce640461/FLAGadc71d96e [2020-09-25 10:05:21,689 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:21,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 10:05:21,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c58cf34/09ace14cd5304953b0f6aab3ce640461/FLAGadc71d96e [2020-09-25 10:05:21,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c58cf34/09ace14cd5304953b0f6aab3ce640461 [2020-09-25 10:05:21,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:21,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:21,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:21,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:21,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:21,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a11bedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21, skipping insertion in model container [2020-09-25 10:05:21,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:22,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:22,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:22,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:22,612 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:22,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:22,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:22,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22 WrapperNode [2020-09-25 10:05:22,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:22,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:22,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:22,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:22,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (1/1) ... [2020-09-25 10:05:22,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:22,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:22,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:22,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:22,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (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 10:05:22,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:22,915 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:22,916 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:22,918 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:23,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:23,523 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-25 10:05:23,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:23 BoogieIcfgContainer [2020-09-25 10:05:23,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:23,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:23,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:23,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:23,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:21" (1/3) ... [2020-09-25 10:05:23,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f939742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:22" (2/3) ... [2020-09-25 10:05:23,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f939742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:23, skipping insertion in model container [2020-09-25 10:05:23,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:23" (3/3) ... [2020-09-25 10:05:23,566 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-25 10:05:23,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:23,604 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 10:05:23,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 10:05:23,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:23,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:23,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:23,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:23,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:23,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:23,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:23,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 10:05:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 10:05:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:23,701 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 10:05:23,702 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 10:05:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-25 10:05:23,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:23,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612207252] [2020-09-25 10:05:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:23,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:24,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:05:24,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-25 10:05:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:05:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:05:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:24,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:24,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:24,743 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 10:05:24,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612207252] [2020-09-25 10:05:24,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:24,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:24,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140919730] [2020-09-25 10:05:24,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:24,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:24,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:24,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:24,776 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 6 states. [2020-09-25 10:05:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:25,245 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-09-25 10:05:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:05:25,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 10:05:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:25,274 INFO L225 Difference]: With dead ends: 272 [2020-09-25 10:05:25,274 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 10:05:25,281 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 10:05:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 10:05:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2020-09-25 10:05:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 10:05:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-25 10:05:25,371 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 26 [2020-09-25 10:05:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:25,371 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-25 10:05:25,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-25 10:05:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 10:05:25,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:25,375 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 10:05:25,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:25,376 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 10:05:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:25,378 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-25 10:05:25,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:25,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526461441] [2020-09-25 10:05:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:05:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 10:05:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:05:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,485 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 10:05:26,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526461441] [2020-09-25 10:05:26,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:26,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:05:26,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777222821] [2020-09-25 10:05:26,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:05:26,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:26,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:05:26,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:05:26,489 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 10 states. [2020-09-25 10:05:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:27,070 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2020-09-25 10:05:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:05:27,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-25 10:05:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:27,076 INFO L225 Difference]: With dead ends: 173 [2020-09-25 10:05:27,076 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 10:05:27,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 10:05:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 86. [2020-09-25 10:05:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 10:05:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-25 10:05:27,098 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 27 [2020-09-25 10:05:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:27,099 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-25 10:05:27,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:05:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-25 10:05:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:05:27,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:27,102 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 10:05:27,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:27,106 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 10:05:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-25 10:05:27,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:27,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422280360] [2020-09-25 10:05:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:28,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 10:05:28,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-09-25 10:05:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:28,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:05:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:29,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:29,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:29,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:29,489 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 10:05:29,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422280360] [2020-09-25 10:05:29,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:29,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 10:05:29,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262121469] [2020-09-25 10:05:29,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:05:29,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:29,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:05:29,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:29,495 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 14 states. [2020-09-25 10:05:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:30,775 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-25 10:05:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:30,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 10:05:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:30,778 INFO L225 Difference]: With dead ends: 223 [2020-09-25 10:05:30,778 INFO L226 Difference]: Without dead ends: 220 [2020-09-25 10:05:30,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:05:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-25 10:05:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 106. [2020-09-25 10:05:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 10:05:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 10:05:30,810 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 35 [2020-09-25 10:05:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:30,811 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 10:05:30,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:05:30,811 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 10:05:30,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:05:30,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:30,813 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 10:05:30,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:30,814 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 10:05:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:30,814 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-25 10:05:30,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:30,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719149615] [2020-09-25 10:05:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:31,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:31,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 10:05:31,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:31,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 10:05:31,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:31,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:05:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:31,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:31,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:31,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:31,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:31,928 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 10:05:31,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719149615] [2020-09-25 10:05:31,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:31,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 10:05:31,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316324121] [2020-09-25 10:05:31,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:05:31,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:05:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:31,931 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 14 states. [2020-09-25 10:05:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:32,941 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2020-09-25 10:05:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:05:32,941 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 10:05:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:32,943 INFO L225 Difference]: With dead ends: 233 [2020-09-25 10:05:32,943 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 10:05:32,946 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 10:05:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 10:05:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-09-25 10:05:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 10:05:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-25 10:05:32,967 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 35 [2020-09-25 10:05:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:32,967 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-25 10:05:32,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:05:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-25 10:05:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 10:05:32,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:32,970 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 10:05:32,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:32,970 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 10:05:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:32,972 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-25 10:05:32,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:32,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054404283] [2020-09-25 10:05:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 10:05:33,001 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 10:05:33,001 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 10:05:33,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:33,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:05:33 BoogieIcfgContainer [2020-09-25 10:05:33,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:05:33,044 INFO L168 Benchmark]: Toolchain (without parser) took 11065.53 ms. Allocated memory was 138.9 MB in the beginning and 319.3 MB in the end (delta: 180.4 MB). Free memory was 101.3 MB in the beginning and 155.3 MB in the end (delta: -54.0 MB). Peak memory consumption was 126.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,045 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 171.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,049 INFO L168 Benchmark]: Boogie Preprocessor took 76.00 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,055 INFO L168 Benchmark]: RCFGBuilder took 710.09 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 117.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,056 INFO L168 Benchmark]: TraceAbstraction took 9508.54 ms. Allocated memory was 204.5 MB in the beginning and 319.3 MB in the end (delta: 114.8 MB). Free memory was 116.6 MB in the beginning and 155.3 MB in the end (delta: -38.7 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:33,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 171.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.00 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 710.09 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 117.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9508.54 ms. Allocated memory was 204.5 MB in the beginning and 319.3 MB in the end (delta: 114.8 MB). Free memory was 116.6 MB in the beginning and 155.3 MB in the end (delta: -38.7 MB). Peak memory consumption was 76.1 MB. 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: 9.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.4s, 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, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.1s 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, 5.3s 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...