/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:02:50,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:02:50,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:02:50,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:02:50,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:02:50,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:02:50,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:02:50,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:02:50,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:02:50,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:02:50,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:02:50,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:02:50,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:02:50,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:02:50,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:02:50,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:02:50,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:02:50,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:02:50,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:02:50,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:02:50,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:02:50,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:02:50,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:02:50,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:02:50,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:02:50,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:02:50,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:02:50,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:02:50,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:02:50,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:02:50,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:02:50,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:02:50,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:02:50,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:02:50,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:02:50,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:02:50,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:02:50,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:02:50,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:02:50,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:02:50,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:02:50,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:02:50,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:02:50,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:02:50,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:02:50,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:02:50,296 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:02:50,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:02:50,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:02:50,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:02:50,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:02:50,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:02:50,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:02:50,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:02:50,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:02:50,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:02:50,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:02:50,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:02:50,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:02:50,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:02:50,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:02:50,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:02:50,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:02:50,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:02:50,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:02:50,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:02:50,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:02:50,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:02:50,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:02:50,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:02:50,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:02:50,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:02:50,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:02:50,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:02:50,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:02:50,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:02:50,792 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:02:50,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-25 10:02:50,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110c1cf70/35e5fdb685d34780a91b256819a36ee5/FLAG0f715a529 [2020-09-25 10:02:51,478 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:02:51,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-25 10:02:51,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110c1cf70/35e5fdb685d34780a91b256819a36ee5/FLAG0f715a529 [2020-09-25 10:02:51,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/110c1cf70/35e5fdb685d34780a91b256819a36ee5 [2020-09-25 10:02:51,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:02:51,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:02:51,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:02:51,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:02:51,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:02:51,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:02:51" (1/1) ... [2020-09-25 10:02:51,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aee9161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:51, skipping insertion in model container [2020-09-25 10:02:51,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:02:51" (1/1) ... [2020-09-25 10:02:51,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:02:51,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:02:52,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:02:52,117 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:02:52,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:02:52,161 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:02:52,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52 WrapperNode [2020-09-25 10:02:52,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:02:52,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:02:52,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:02:52,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:02:52,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... [2020-09-25 10:02:52,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:02:52,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:02:52,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:02:52,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:02:52,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:02:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:02:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:02:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:02:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:02:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 10:02:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:02:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 10:02:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:02:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:02:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:02:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:02:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:02:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:02:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:02:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 10:02:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:02:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:02:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:02:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 10:02:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:02:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:02:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:02:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:02:52,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:02:52,781 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:02:52,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:02:52 BoogieIcfgContainer [2020-09-25 10:02:52,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:02:52,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:02:52,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:02:52,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:02:52,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:02:51" (1/3) ... [2020-09-25 10:02:52,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6771db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:02:52, skipping insertion in model container [2020-09-25 10:02:52,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:02:52" (2/3) ... [2020-09-25 10:02:52,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6771db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:02:52, skipping insertion in model container [2020-09-25 10:02:52,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:02:52" (3/3) ... [2020-09-25 10:02:52,797 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-09-25 10:02:52,808 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:02:52,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:02:52,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:02:52,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:02:52,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:02:52,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:02:52,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:02:52,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:02:52,876 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:02:52,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:02:52,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:02:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-25 10:02:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:02:52,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:52,909 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] [2020-09-25 10:02:52,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1490874143, now seen corresponding path program 1 times [2020-09-25 10:02:52,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:52,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528289818] [2020-09-25 10:02:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:02:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 10:02:53,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:02:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 10:02:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:02:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:02:53,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:53,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:02:53,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:02:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:02:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:02:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 10:02:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:02:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:02:53,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:53,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:02:53,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528289818] [2020-09-25 10:02:53,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:02:53,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:02:53,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975055937] [2020-09-25 10:02:53,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:02:53,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:02:54,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:02:54,017 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 10 states. [2020-09-25 10:02:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:54,931 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2020-09-25 10:02:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:02:54,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-25 10:02:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:54,952 INFO L225 Difference]: With dead ends: 209 [2020-09-25 10:02:54,952 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 10:02:54,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:02:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 10:02:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-09-25 10:02:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 10:02:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-25 10:02:55,039 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 31 [2020-09-25 10:02:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:55,040 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-25 10:02:55,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:02:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-25 10:02:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:02:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:55,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:55,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:02:55,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1249778318, now seen corresponding path program 1 times [2020-09-25 10:02:55,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:55,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474918695] [2020-09-25 10:02:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:56,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:56,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:02:56,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:02:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 10:02:56,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:56,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 10:02:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:02:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:02:57,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:02:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:57,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:02:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:02:57,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:57,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:02:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:57,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:57,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:02:57,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:02:57,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:57,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 10:02:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:02:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:02:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:57,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:02:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:02:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:02:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:57,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:02:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:02:57,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:02:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:02:57,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:02:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:02:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:02:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:02:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:02:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:02:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:02:57,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474918695] [2020-09-25 10:02:57,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:02:57,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:02:57,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332283093] [2020-09-25 10:02:57,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:02:57,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:02:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:02:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:02:57,174 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 15 states. [2020-09-25 10:02:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:02:58,771 INFO L93 Difference]: Finished difference Result 189 states and 205 transitions. [2020-09-25 10:02:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:02:58,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-25 10:02:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:02:58,782 INFO L225 Difference]: With dead ends: 189 [2020-09-25 10:02:58,783 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 10:02:58,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:02:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 10:02:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2020-09-25 10:02:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-25 10:02:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2020-09-25 10:02:58,836 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 52 [2020-09-25 10:02:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:02:58,837 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2020-09-25 10:02:58,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:02:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2020-09-25 10:02:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:02:58,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:02:58,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:02:58,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:02:58,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:02:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:02:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -448975570, now seen corresponding path program 1 times [2020-09-25 10:02:58,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:02:58,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377956087] [2020-09-25 10:02:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:02:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:02:58,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:02:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:03:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:03:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:03:03,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:03,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:03:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 10:03:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:03:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:03:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:04,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:04,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:03:04,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:03:04,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:04,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 10:03:04,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:03:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:04,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:04,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:04,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:03:04,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:04,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:03:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 10:03:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:03:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:03:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:04,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:03:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:04,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:04,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:03:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:03:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:04,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:03:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:04,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377956087] [2020-09-25 10:03:04,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:04,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:03:04,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529325845] [2020-09-25 10:03:04,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:03:04,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:03:04,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:03:04,336 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 17 states. [2020-09-25 10:03:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:06,418 INFO L93 Difference]: Finished difference Result 269 states and 303 transitions. [2020-09-25 10:03:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:03:06,419 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-25 10:03:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:06,426 INFO L225 Difference]: With dead ends: 269 [2020-09-25 10:03:06,426 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 10:03:06,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 10:03:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 10:03:06,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 200. [2020-09-25 10:03:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 10:03:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2020-09-25 10:03:06,462 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 52 [2020-09-25 10:03:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:06,463 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2020-09-25 10:03:06,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:03:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2020-09-25 10:03:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 10:03:06,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:06,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:06,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:03:06,466 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:06,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1366237712, now seen corresponding path program 1 times [2020-09-25 10:03:06,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:06,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098853245] [2020-09-25 10:03:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 10:03:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:03:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4364 [2020-09-25 10:03:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:03:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 10:03:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:03:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:03:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:03:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:03:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:11,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 10:03:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:03:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:03:11,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:03:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:03:11,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:03:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:11,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:03:11,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 10:03:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:03:11,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:03:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:03:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 10:03:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:11,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:11,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:03:11,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:11,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:03:11,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098853245] [2020-09-25 10:03:11,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:11,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:03:11,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558508596] [2020-09-25 10:03:11,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:03:11,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:03:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:03:11,180 INFO L87 Difference]: Start difference. First operand 200 states and 219 transitions. Second operand 15 states. [2020-09-25 10:03:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:11,978 INFO L93 Difference]: Finished difference Result 212 states and 235 transitions. [2020-09-25 10:03:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:03:11,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-25 10:03:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:11,981 INFO L225 Difference]: With dead ends: 212 [2020-09-25 10:03:11,981 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 10:03:11,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:03:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 10:03:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-09-25 10:03:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 10:03:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-09-25 10:03:12,005 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 72 [2020-09-25 10:03:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:12,006 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-09-25 10:03:12,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:03:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-09-25 10:03:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:03:12,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:12,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:12,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:03:12,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2045890305, now seen corresponding path program 2 times [2020-09-25 10:03:12,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:12,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076085399] [2020-09-25 10:03:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 10:03:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:03:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:03:17,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:03:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 10:03:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:03:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:03:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:03:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:03:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:03:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:03:17,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 10:03:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 10:03:17,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:03:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:03:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:17,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:03:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:03:17,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:03:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:17,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 10:03:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:17,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:03:17,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:03:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:17,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:03:17,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076085399] [2020-09-25 10:03:17,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:03:17,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 10:03:17,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949015325] [2020-09-25 10:03:17,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 10:03:17,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:17,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 10:03:17,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:03:17,506 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 22 states. [2020-09-25 10:03:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:19,022 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2020-09-25 10:03:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:03:19,023 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-09-25 10:03:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:19,024 INFO L225 Difference]: With dead ends: 138 [2020-09-25 10:03:19,024 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:03:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 10:03:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:03:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:03:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:03:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:03:19,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2020-09-25 10:03:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:19,028 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:03:19,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 10:03:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:03:19,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:03:19,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:03:19,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:03:20,354 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-09-25 10:03:20,681 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-09-25 10:03:20,951 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-09-25 10:03:21,245 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-09-25 10:03:21,252 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,252 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,252 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,253 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 10:03:21,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,253 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:03:21,253 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:03:21,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,253 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-25 10:03:21,254 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-09-25 10:03:21,254 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 10:03:21,255 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 10:03:21,255 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-09-25 10:03:21,255 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-25 10:03:21,255 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-25 10:03:21,255 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-25 10:03:21,255 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:03:21,256 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 10:03:21,257 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:03:21,257 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 10:03:21,257 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-09-25 10:03:21,257 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (= (select |#memory_int| check_~a.base) .cse4)) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) (and (<= (+ |check_#in~y| 2) |check_#in~n|) .cse1) .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse1) (not (= |check_#in~x| 0)) .cse2)))) [2020-09-25 10:03:21,257 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 10:03:21,257 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 10:03:21,257 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,258 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L268 CegarLoopResult]: For program point L23-7(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L268 CegarLoopResult]: For program point L23-9(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L268 CegarLoopResult]: For program point L23-10(line 23) no Hoare annotation was computed. [2020-09-25 10:03:21,259 INFO L264 CegarLoopResult]: At program point L23-11(lines 23 24) the Hoare annotation is: (let ((.cse9 ((as const (Array Int Int)) 0))) (let ((.cse1 (= (select |#memory_int| |check_#in~a.base|) .cse9))) (let ((.cse7 (<= 2 check_~x)) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse5 (<= 1 check_~x)) (.cse2 (<= 0 check_~x)) (.cse3 (<= (+ check_~y 2) check_~n)) (.cse4 (= (select |#memory_int| check_~a.base) .cse9)) (.cse6 (not .cse1))) (and (or .cse0 (not (<= 1 |check_#in~x|)) (and .cse1 .cse2 .cse3 .cse4 .cse5) .cse6 .cse7) (or .cse0 .cse6 (not (<= 2 |check_#in~x|)) .cse7) (or .cse0 (let ((.cse8 (+ check_~y 1))) (and (<= .cse8 |check_#in~n|) (<= .cse8 check_~n) .cse4 .cse5)) (and .cse1 .cse2 .cse3 .cse4) (not (<= 0 |check_#in~x|)) .cse6))))) [2020-09-25 10:03:21,260 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-09-25 10:03:21,260 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse7 ((as const (Array Int Int)) 0))) (let ((.cse1 (not (<= 1 |check_#in~x|))) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse3 (= check_~ax~0 0)) (.cse4 (= check_~ai~0 0)) (.cse5 (= (select |#memory_int| check_~a.base) .cse7)) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse7)))) (and (or .cse0 .cse1 .cse2 (<= (+ |check_#in~y| 2) |check_#in~n|)) (or (and .cse3 .cse4 .cse5) .cse0 .cse1 .cse2) (or .cse0 (and .cse3 (or (let ((.cse6 (+ check_~y 1))) (and (<= .cse6 |check_#in~n|) (<= .cse6 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse4 .cse5) (not (= |check_#in~x| 0)) .cse2)))) [2020-09-25 10:03:21,260 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 10:03:21,260 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 10:03:21,260 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 10:03:21,260 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 10:03:21,261 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse9 ((as const (Array Int Int)) 0))) (let ((.cse5 (+ check_~y 1)) (.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse8 (not (<= 1 |check_#in~x|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse9)))) (let ((.cse7 (and (or (not (<= (+ |check_#in~y| 2) |check_#in~n|)) (not (<= 0 |check_#in~x|)) .cse1) (or .cse0 .cse8 .cse1))) (.cse6 (<= 1 check_~x)) (.cse4 (<= .cse5 |check_#in~n|)) (.cse3 (= (select |#memory_int| check_~a.base) .cse9))) (and (or .cse0 .cse1 (not (<= 2 |check_#in~x|)) (<= 2 check_~x)) (or (let ((.cse2 (+ check_~y 2))) (and (<= .cse2 check_~n) .cse3 (<= .cse2 |check_#in~n|))) (and .cse4 (<= .cse5 check_~n) .cse3 .cse6) .cse7) (or .cse7 .cse8 .cse6) (or .cse0 (and (< check_~y check_~n) .cse4 .cse3 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1))))) [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point L14(lines 14 37) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 37) no Hoare annotation was computed. [2020-09-25 10:03:21,262 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 37) no Hoare annotation was computed. [2020-09-25 10:03:21,263 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-09-25 10:03:21,263 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-09-25 10:03:21,263 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 10:03:21,263 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 10:03:21,263 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-09-25 10:03:21,263 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 10:03:21,264 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-25 10:03:21,264 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,264 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:03:21,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:03:21 BoogieIcfgContainer [2020-09-25 10:03:21,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:03:21,274 INFO L168 Benchmark]: Toolchain (without parser) took 29469.52 ms. Allocated memory was 148.4 MB in the beginning and 395.3 MB in the end (delta: 246.9 MB). Free memory was 104.5 MB in the beginning and 204.8 MB in the end (delta: -100.3 MB). Peak memory consumption was 238.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,275 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.03 ms. Allocated memory is still 148.4 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,276 INFO L168 Benchmark]: Boogie Preprocessor took 153.53 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 93.4 MB in the beginning and 183.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,277 INFO L168 Benchmark]: RCFGBuilder took 470.22 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 162.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,278 INFO L168 Benchmark]: TraceAbstraction took 28483.33 ms. Allocated memory was 205.5 MB in the beginning and 395.3 MB in the end (delta: 189.8 MB). Free memory was 161.2 MB in the beginning and 204.8 MB in the end (delta: -43.6 MB). Peak memory consumption was 237.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:21,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.03 ms. Allocated memory is still 148.4 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.53 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 93.4 MB in the beginning and 183.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.22 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 162.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28483.33 ms. Allocated memory was 205.5 MB in the beginning and 395.3 MB in the end (delta: 189.8 MB). Free memory was 161.2 MB in the beginning and 204.8 MB in the end (delta: -43.6 MB). Peak memory consumption was 237.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 383 SDtfs, 1739 SDslu, 602 SDs, 0 SdLazy, 4571 SolverSat, 439 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 167 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 81 PreInvPairs, 119 NumberOfFragments, 530 HoareAnnotationTreeSize, 81 FomulaSimplifications, 5548 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1774 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 79486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 48/64 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 correct! Received shutdown request...