/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:12:35,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:12:35,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:12:35,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:12:35,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:12:35,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:12:35,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:12:35,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:12:35,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:12:35,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:12:35,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:12:35,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:12:35,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:12:35,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:12:35,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:12:35,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:12:35,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:12:35,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:12:35,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:12:35,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:12:35,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:12:35,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:12:35,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:12:35,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:12:35,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:12:35,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:12:35,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:12:35,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:12:35,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:12:35,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:12:35,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:12:35,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:12:35,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:12:35,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:12:35,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:12:35,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:12:35,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:12:35,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:12:35,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:12:35,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:12:35,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:12:35,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:12:35,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:12:35,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:12:35,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:12:35,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:12:35,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:12:35,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:12:35,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:12:35,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:12:35,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:12:35,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:12:35,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:12:35,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:12:35,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:12:35,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:12:35,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:12:35,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:12:35,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:12:35,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:12:35,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:12:35,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:12:35,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:12:35,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:35,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:12:35,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:12:35,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:12:35,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:12:35,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:12:35,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:12:35,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:12:35,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:12:35,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:12:35,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:12:35,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:12:35,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:12:35,832 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:12:35,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 11:12:35,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c60cade/2a8c6aeec6c845faa6fbc9d7ecce44c3/FLAG58ac4c45b [2020-09-25 11:12:36,529 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:12:36,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 11:12:36,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c60cade/2a8c6aeec6c845faa6fbc9d7ecce44c3/FLAG58ac4c45b [2020-09-25 11:12:36,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7c60cade/2a8c6aeec6c845faa6fbc9d7ecce44c3 [2020-09-25 11:12:36,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:12:36,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:12:36,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:36,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:12:36,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:12:36,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:36" (1/1) ... [2020-09-25 11:12:36,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff28928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:36, skipping insertion in model container [2020-09-25 11:12:36,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:36" (1/1) ... [2020-09-25 11:12:36,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:12:36,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:12:37,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:37,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:12:37,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:12:37,572 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:12:37,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37 WrapperNode [2020-09-25 11:12:37,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:37,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:12:37,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:12:37,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:12:37,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... [2020-09-25 11:12:37,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:12:37,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:12:37,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:12:37,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:12:37,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:12:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:12:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:12:38,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:12:38,509 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 11:12:38,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:38 BoogieIcfgContainer [2020-09-25 11:12:38,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:12:38,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:12:38,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:12:38,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:12:38,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:12:36" (1/3) ... [2020-09-25 11:12:38,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43739a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:38, skipping insertion in model container [2020-09-25 11:12:38,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:37" (2/3) ... [2020-09-25 11:12:38,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43739a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:12:38, skipping insertion in model container [2020-09-25 11:12:38,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:12:38" (3/3) ... [2020-09-25 11:12:38,526 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 11:12:38,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:12:38,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 11:12:38,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 11:12:38,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:12:38,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:12:38,604 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:12:38,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:12:38,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:12:38,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:12:38,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:12:38,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:12:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 11:12:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 11:12:38,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:38,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:38,644 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:38,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:38,651 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 11:12:38,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:38,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524632605] [2020-09-25 11:12:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:39,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:12:39,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-25 11:12:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:12:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:12:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:12:39,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:39,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:39,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:39,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:39,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:12:39,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:39,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:39,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:39,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:39,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524632605] [2020-09-25 11:12:39,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:39,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:12:39,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309356096] [2020-09-25 11:12:39,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:12:39,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:39,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:12:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:12:39,582 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-09-25 11:12:40,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:40,088 INFO L93 Difference]: Finished difference Result 390 states and 486 transitions. [2020-09-25 11:12:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:12:40,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-25 11:12:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:40,108 INFO L225 Difference]: With dead ends: 390 [2020-09-25 11:12:40,109 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 11:12:40,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:12:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 11:12:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-25 11:12:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 11:12:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-25 11:12:40,195 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 18 [2020-09-25 11:12:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:40,195 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-25 11:12:40,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:12:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-25 11:12:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 11:12:40,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:40,198 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, 1] [2020-09-25 11:12:40,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:12:40,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:40,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-25 11:12:40,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:40,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653364218] [2020-09-25 11:12:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 11:12:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:12:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-09-25 11:12:43,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:43,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:43,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:12:43,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:12:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:12:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:43,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:43,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:12:43,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:43,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:43,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653364218] [2020-09-25 11:12:43,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:43,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:12:43,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22080799] [2020-09-25 11:12:43,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:12:43,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:12:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:12:43,398 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 7 states. [2020-09-25 11:12:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:43,987 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2020-09-25 11:12:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:12:43,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 11:12:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:43,991 INFO L225 Difference]: With dead ends: 309 [2020-09-25 11:12:43,991 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 11:12:43,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:12:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 11:12:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-09-25 11:12:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 11:12:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-25 11:12:44,011 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 43 [2020-09-25 11:12:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:44,012 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-25 11:12:44,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:12:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-25 11:12:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:12:44,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:44,016 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:12:44,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:12:44,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1161635121, now seen corresponding path program 1 times [2020-09-25 11:12:44,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:44,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527219290] [2020-09-25 11:12:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:48,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:48,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 11:12:48,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:12:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4303 [2020-09-25 11:12:48,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:48,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:12:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:12:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:12:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:12:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:48,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:48,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527219290] [2020-09-25 11:12:48,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:48,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:12:48,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091541229] [2020-09-25 11:12:48,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:12:48,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:48,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:12:48,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:12:48,468 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 7 states. [2020-09-25 11:12:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:48,895 INFO L93 Difference]: Finished difference Result 287 states and 309 transitions. [2020-09-25 11:12:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:12:48,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 11:12:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:48,898 INFO L225 Difference]: With dead ends: 287 [2020-09-25 11:12:48,898 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 11:12:48,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:12:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 11:12:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2020-09-25 11:12:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 11:12:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2020-09-25 11:12:48,925 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 56 [2020-09-25 11:12:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:48,926 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2020-09-25 11:12:48,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:12:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2020-09-25 11:12:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 11:12:48,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:48,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:48,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:12:48,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:48,933 INFO L82 PathProgramCache]: Analyzing trace with hash 964312838, now seen corresponding path program 1 times [2020-09-25 11:12:48,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:48,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553139906] [2020-09-25 11:12:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 11:12:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:12:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4507 [2020-09-25 11:12:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:12:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:12:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:53,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:53,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:12:53,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:53,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553139906] [2020-09-25 11:12:53,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:53,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:12:53,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011906663] [2020-09-25 11:12:53,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:12:53,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:53,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:12:53,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:12:53,560 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 7 states. [2020-09-25 11:12:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:53,950 INFO L93 Difference]: Finished difference Result 308 states and 328 transitions. [2020-09-25 11:12:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:12:53,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 11:12:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:53,954 INFO L225 Difference]: With dead ends: 308 [2020-09-25 11:12:53,954 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 11:12:53,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:12:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 11:12:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 164. [2020-09-25 11:12:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 11:12:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2020-09-25 11:12:53,985 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 59 [2020-09-25 11:12:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:53,986 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2020-09-25 11:12:53,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:12:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2020-09-25 11:12:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 11:12:53,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:53,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:53,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:12:53,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash -70417469, now seen corresponding path program 1 times [2020-09-25 11:12:53,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:53,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075621681] [2020-09-25 11:12:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:54,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:54,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:12:54,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:12:54,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-09-25 11:12:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:54,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:12:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:12:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:55,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:55,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:12:55,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:55,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:55,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075621681] [2020-09-25 11:12:55,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:55,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 11:12:55,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276389969] [2020-09-25 11:12:55,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:12:55,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:55,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:12:55,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:12:55,413 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 13 states. [2020-09-25 11:12:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:12:56,284 INFO L93 Difference]: Finished difference Result 282 states and 298 transitions. [2020-09-25 11:12:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:12:56,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-09-25 11:12:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:12:56,287 INFO L225 Difference]: With dead ends: 282 [2020-09-25 11:12:56,287 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 11:12:56,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:12:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 11:12:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 191. [2020-09-25 11:12:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 11:12:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 204 transitions. [2020-09-25 11:12:56,302 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 204 transitions. Word has length 61 [2020-09-25 11:12:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:12:56,302 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 204 transitions. [2020-09-25 11:12:56,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:12:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 204 transitions. [2020-09-25 11:12:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:12:56,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:12:56,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:12:56,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:12:56,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:12:56,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:12:56,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546672, now seen corresponding path program 1 times [2020-09-25 11:12:56,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:12:56,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760315551] [2020-09-25 11:12:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:12:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 11:12:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:12:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-09-25 11:12:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:58,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:12:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:12:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:12:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:12:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:12:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:12:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:12:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:12:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:12:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:12:58,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:12:58,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:12:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:12:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:12:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:12:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:12:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:12:58,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760315551] [2020-09-25 11:12:58,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:12:58,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 11:12:58,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052250618] [2020-09-25 11:12:58,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:12:58,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:12:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:12:58,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:12:58,935 INFO L87 Difference]: Start difference. First operand 191 states and 204 transitions. Second operand 14 states. [2020-09-25 11:13:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:00,064 INFO L93 Difference]: Finished difference Result 280 states and 296 transitions. [2020-09-25 11:13:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:13:00,064 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-25 11:13:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:00,067 INFO L225 Difference]: With dead ends: 280 [2020-09-25 11:13:00,067 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 11:13:00,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:13:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 11:13:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 191. [2020-09-25 11:13:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 11:13:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2020-09-25 11:13:00,079 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 62 [2020-09-25 11:13:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:00,080 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2020-09-25 11:13:00,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:13:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2020-09-25 11:13:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 11:13:00,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:00,083 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:00,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:13:00,084 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:00,084 INFO L82 PathProgramCache]: Analyzing trace with hash -411491553, now seen corresponding path program 1 times [2020-09-25 11:13:00,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:00,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97158783] [2020-09-25 11:13:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 11:13:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:13:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:05,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:13:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:13:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:05,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:05,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:05,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:05,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:05,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:05,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:05,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97158783] [2020-09-25 11:13:05,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:05,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:13:05,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212012701] [2020-09-25 11:13:05,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:13:05,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:05,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:13:05,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:05,367 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand 15 states. [2020-09-25 11:13:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:06,635 INFO L93 Difference]: Finished difference Result 486 states and 520 transitions. [2020-09-25 11:13:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:13:06,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-09-25 11:13:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:06,638 INFO L225 Difference]: With dead ends: 486 [2020-09-25 11:13:06,638 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 11:13:06,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:13:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 11:13:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 219. [2020-09-25 11:13:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-09-25 11:13:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2020-09-25 11:13:06,649 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 62 [2020-09-25 11:13:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:06,650 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2020-09-25 11:13:06,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:13:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2020-09-25 11:13:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 11:13:06,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:06,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:06,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:13:06,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:06,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:06,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1053070700, now seen corresponding path program 1 times [2020-09-25 11:13:06,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:06,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897300847] [2020-09-25 11:13:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:13:08,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:13:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:13:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:08,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:08,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:08,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:13:08,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:08,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:08,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:08,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:08,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897300847] [2020-09-25 11:13:08,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:08,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 11:13:08,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698297244] [2020-09-25 11:13:08,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:13:08,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:08,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:13:08,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:13:08,735 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 14 states. [2020-09-25 11:13:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:09,410 INFO L93 Difference]: Finished difference Result 386 states and 417 transitions. [2020-09-25 11:13:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:13:09,411 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-09-25 11:13:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:09,413 INFO L225 Difference]: With dead ends: 386 [2020-09-25 11:13:09,413 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 11:13:09,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:13:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 11:13:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 190. [2020-09-25 11:13:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 11:13:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2020-09-25 11:13:09,425 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 63 [2020-09-25 11:13:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:09,425 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2020-09-25 11:13:09,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:13:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2020-09-25 11:13:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 11:13:09,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:09,426 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:09,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:13:09,427 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 11:13:09,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:09,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107502315] [2020-09-25 11:13:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:13:09,450 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:13:09,450 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:13:09,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:13:09,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:13:09 BoogieIcfgContainer [2020-09-25 11:13:09,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:13:09,479 INFO L168 Benchmark]: Toolchain (without parser) took 32653.18 ms. Allocated memory was 141.0 MB in the beginning and 437.8 MB in the end (delta: 296.7 MB). Free memory was 101.5 MB in the beginning and 234.6 MB in the end (delta: -133.1 MB). Peak memory consumption was 163.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:13:09,479 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:13:09,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.81 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 171.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:13:09,481 INFO L168 Benchmark]: Boogie Preprocessor took 83.31 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 168.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:13:09,482 INFO L168 Benchmark]: RCFGBuilder took 858.40 ms. Allocated memory is still 205.5 MB. Free memory was 168.5 MB in the beginning and 108.0 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:13:09,483 INFO L168 Benchmark]: TraceAbstraction took 30958.18 ms. Allocated memory was 205.5 MB in the beginning and 437.8 MB in the end (delta: 232.3 MB). Free memory was 107.3 MB in the beginning and 234.6 MB in the end (delta: -127.3 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:13:09,489 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.81 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 171.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.31 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 168.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 858.40 ms. Allocated memory is still 205.5 MB. Free memory was 168.5 MB in the beginning and 108.0 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30958.18 ms. Allocated memory was 205.5 MB in the beginning and 437.8 MB in the end (delta: 232.3 MB). Free memory was 107.3 MB in the beginning and 234.6 MB in the end (delta: -127.3 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1049 SDtfs, 4194 SDslu, 5447 SDs, 0 SdLazy, 3396 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=7, 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, 8 MinimizatonAttempts, 615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 236461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 4/6 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...