/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:23,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:23,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:23,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:23,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:23,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:23,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:23,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:23,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:23,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:23,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:23,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:23,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:23,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:23,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:23,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:23,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:23,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:23,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:23,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:23,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:23,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:23,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:23,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:23,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:23,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:23,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:23,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:23,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:23,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:23,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:23,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:23,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:23,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:23,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:23,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:23,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:23,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:23,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:23,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:23,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:23,825 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 08:57:23,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:23,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:23,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:23,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:23,852 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:23,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:23,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:23,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:23,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:23,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:23,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:23,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:23,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:23,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:23,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:23,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:23,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:23,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:23,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:23,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:23,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:23,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:23,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:23,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:23,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:23,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:23,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:23,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:23,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:23,858 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:57:24,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:24,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:24,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:24,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:24,356 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:24,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-25 08:57:24,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/983768c7d/804c2c8ffcce4bb9bd13cfc46e78cada/FLAG264354b3b [2020-09-25 08:57:25,085 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:25,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-25 08:57:25,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/983768c7d/804c2c8ffcce4bb9bd13cfc46e78cada/FLAG264354b3b [2020-09-25 08:57:25,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/983768c7d/804c2c8ffcce4bb9bd13cfc46e78cada [2020-09-25 08:57:25,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:25,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:25,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:25,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:25,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:25,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:25" (1/1) ... [2020-09-25 08:57:25,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:25, skipping insertion in model container [2020-09-25 08:57:25,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:25" (1/1) ... [2020-09-25 08:57:25,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:25,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:25,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:25,952 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:26,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:26,088 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26 WrapperNode [2020-09-25 08:57:26,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:26,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:26,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:26,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:26,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (1/1) ... [2020-09-25 08:57:26,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:26,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:26,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:26,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:26,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (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 08:57:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:57:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:57:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 08:57:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-09-25 08:57:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-09-25 08:57:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-09-25 08:57:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-09-25 08:57:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-09-25 08:57:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-09-25 08:57:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-09-25 08:57:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-09-25 08:57:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:57:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:57:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:57:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:57:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:57:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:57:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:57:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:57:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:57:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:57:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:57:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:57:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:57:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:57:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:57:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:57:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:57:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:57:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:57:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:57:26,270 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:57:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:57:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:57:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:57:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:57:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:57:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:57:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:57:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:57:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:57:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:57:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:57:26,277 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:57:26,277 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:57:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:57:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:57:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:57:26,280 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:57:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:57:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:57:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:57:26,284 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:57:26,284 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:57:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 08:57:26,285 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-09-25 08:57:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:57:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:57:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-09-25 08:57:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:57:26,286 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-09-25 08:57:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:57:26,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 08:57:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:57:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-09-25 08:57:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-09-25 08:57:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-09-25 08:57:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-09-25 08:57:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-09-25 08:57:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:27,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:27,113 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 08:57:27,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:27 BoogieIcfgContainer [2020-09-25 08:57:27,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:27,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:27,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:27,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:27,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:25" (1/3) ... [2020-09-25 08:57:27,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d468d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:27, skipping insertion in model container [2020-09-25 08:57:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:26" (2/3) ... [2020-09-25 08:57:27,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d468d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:27, skipping insertion in model container [2020-09-25 08:57:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:27" (3/3) ... [2020-09-25 08:57:27,130 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-09-25 08:57:27,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:27,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:27,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:27,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:27,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:27,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:27,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:27,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:27,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:27,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:27,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-25 08:57:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 08:57:27,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:27,299 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] [2020-09-25 08:57:27,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:27,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2069327278, now seen corresponding path program 1 times [2020-09-25 08:57:27,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:27,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620736253] [2020-09-25 08:57:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:57:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:57:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 08:57:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:27,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:57:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:57:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:57:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:57:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:57:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 08:57:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:28,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:57:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:28,160 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 08:57:28,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620736253] [2020-09-25 08:57:28,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:28,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:57:28,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895148356] [2020-09-25 08:57:28,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:57:28,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:57:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:57:28,194 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2020-09-25 08:57:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:28,727 INFO L93 Difference]: Finished difference Result 423 states and 572 transitions. [2020-09-25 08:57:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:57:28,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 08:57:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:28,747 INFO L225 Difference]: With dead ends: 423 [2020-09-25 08:57:28,748 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 08:57:28,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:57:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 08:57:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2020-09-25 08:57:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 08:57:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2020-09-25 08:57:28,840 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 41 [2020-09-25 08:57:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:28,840 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2020-09-25 08:57:28,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:57:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2020-09-25 08:57:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 08:57:28,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:28,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:28,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:28,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2121642840, now seen corresponding path program 1 times [2020-09-25 08:57:28,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:28,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787529278] [2020-09-25 08:57:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:33,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:33,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 08:57:33,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:57:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 08:57:33,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:33,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:57:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:57:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 08:57:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:34,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:57:34,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:57:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:34,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:34,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:57:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:57:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 08:57:39,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:39,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:57:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:57:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-25 08:57:39,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 08:57:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:57:40,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 08:57:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:57:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:57:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 08:57:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:57:40,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:57:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 08:57:40,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:57:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:57:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 08:57:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:57:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 08:57:40,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:40,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:57:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:57:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 08:57:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:45,891 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-09-25 08:57:46,165 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-09-25 08:57:46,458 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-09-25 08:57:51,407 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 266 DAG size of output: 142 [2020-09-25 08:57:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 08:57:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:52,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:52,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:57:52,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 08:57:52,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:52,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:57:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:57:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:57:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:57:53,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787529278] [2020-09-25 08:57:53,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:57:53,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-25 08:57:53,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104279175] [2020-09-25 08:57:53,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-25 08:57:53,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-25 08:57:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:57:53,490 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand 30 states. [2020-09-25 08:57:54,717 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-25 08:57:54,992 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-09-25 08:57:55,190 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-25 08:57:55,467 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-25 08:57:57,975 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 165 [2020-09-25 08:58:00,203 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 158 [2020-09-25 08:58:02,831 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 08:58:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:58:22,158 INFO L93 Difference]: Finished difference Result 272 states and 310 transitions. [2020-09-25 08:58:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 08:58:22,161 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 85 [2020-09-25 08:58:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:58:22,166 INFO L225 Difference]: With dead ends: 272 [2020-09-25 08:58:22,166 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 08:58:22,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=269, Invalid=2811, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 08:58:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 08:58:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 205. [2020-09-25 08:58:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 08:58:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 227 transitions. [2020-09-25 08:58:22,199 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 227 transitions. Word has length 85 [2020-09-25 08:58:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:58:22,199 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 227 transitions. [2020-09-25 08:58:22,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-25 08:58:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 227 transitions. [2020-09-25 08:58:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 08:58:22,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:58:22,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:58:22,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:58:22,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:58:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:58:22,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1210442558, now seen corresponding path program 1 times [2020-09-25 08:58:22,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:58:22,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983228206] [2020-09-25 08:58:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:58:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:58:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:58:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking...