/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:41:50,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:41:50,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:41:50,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:41:50,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:41:50,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:41:50,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:41:50,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:41:50,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:41:50,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:41:50,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:41:50,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:41:50,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:41:50,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:41:50,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:41:50,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:41:50,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:41:50,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:41:50,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:41:50,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:41:50,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:41:50,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:41:50,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:41:50,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:50,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:50,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:50,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:50,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:50,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:50,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:50,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:50,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:50,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:50,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:50,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:50,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:50,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:50,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:50,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:50,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:50,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:50,675 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 [2020-09-24 20:41:50,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:50,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:50,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:50,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:50,703 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:50,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:50,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:50,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:50,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:50,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:50,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:50,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:50,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:50,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:50,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:50,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:50,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:50,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:50,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:50,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:50,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:50,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:50,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:50,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:50,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:50,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:50,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:50,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:50,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:50,708 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:41:51,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:51,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:51,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:51,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:51,221 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:51,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2020-09-24 20:41:51,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d62cb7575/fb98a310ee4648c29b9d63130723f7a9/FLAG96645411e [2020-09-24 20:41:51,851 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:51,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/n.c40.c [2020-09-24 20:41:51,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d62cb7575/fb98a310ee4648c29b9d63130723f7a9/FLAG96645411e [2020-09-24 20:41:52,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d62cb7575/fb98a310ee4648c29b9d63130723f7a9 [2020-09-24 20:41:52,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:52,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:52,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:52,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:52,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:52,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52, skipping insertion in model container [2020-09-24 20:41:52,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:52,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:52,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:52,537 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:52,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:52,592 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:52,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52 WrapperNode [2020-09-24 20:41:52,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:52,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:52,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:52,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:52,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ... [2020-09-24 20:41:52,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:52,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:52,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:52,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:52,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (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 [2020-09-24 20:41:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:41:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:53,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:53,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:41:53,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:53 BoogieIcfgContainer [2020-09-24 20:41:53,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:53,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:53,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:53,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:53,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:52" (1/3) ... [2020-09-24 20:41:53,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b8fb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:53, skipping insertion in model container [2020-09-24 20:41:53,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (2/3) ... [2020-09-24 20:41:53,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b8fb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:53, skipping insertion in model container [2020-09-24 20:41:53,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:53" (3/3) ... [2020-09-24 20:41:53,145 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-09-24 20:41:53,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:53,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:53,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:53,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:53,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:53,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:53,218 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:53,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:53,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:53,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:53,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-09-24 20:41:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:41:53,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:53,248 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] [2020-09-24 20:41:53,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash 814682400, now seen corresponding path program 1 times [2020-09-24 20:41:53,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:53,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434657393] [2020-09-24 20:41:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:53,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:41:53,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 20:41:53,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:41:53,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:41:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:41:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:41:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:41:53,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:54,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434657393] [2020-09-24 20:41:54,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:54,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:41:54,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336076466] [2020-09-24 20:41:54,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:41:54,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:41:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:41:54,040 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-09-24 20:41:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:54,237 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-09-24 20:41:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:41:54,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-24 20:41:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:54,252 INFO L225 Difference]: With dead ends: 70 [2020-09-24 20:41:54,253 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 20:41:54,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:41:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 20:41:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-24 20:41:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 20:41:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-09-24 20:41:54,312 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 25 [2020-09-24 20:41:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:54,313 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-09-24 20:41:54,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:41:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-09-24 20:41:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:41:54,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:54,315 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:54,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:54,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash -189710638, now seen corresponding path program 1 times [2020-09-24 20:41:54,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:54,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331260604] [2020-09-24 20:41:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:41:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-09-24 20:41:55,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:41:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:41:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:41:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:41:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:41:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:55,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331260604] [2020-09-24 20:41:55,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:55,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:41:55,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543455382] [2020-09-24 20:41:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:41:55,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:55,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:41:55,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:41:55,905 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2020-09-24 20:41:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:56,332 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-24 20:41:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:41:56,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-24 20:41:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:56,335 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:41:56,335 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:41:56,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:41:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:41:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-24 20:41:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:41:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-24 20:41:56,345 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 36 [2020-09-24 20:41:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:56,346 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-24 20:41:56,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:41:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-24 20:41:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 20:41:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:56,348 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 20:41:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:41:56,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1586350990, now seen corresponding path program 2 times [2020-09-24 20:41:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:56,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316297040] [2020-09-24 20:41:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:01,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:42:01,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:42:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:42:01,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:42:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:42:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:42:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:01,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:01,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:01,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:42:01,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:42:01,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:01,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:01,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:01,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316297040] [2020-09-24 20:42:01,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:01,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 20:42:01,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465946133] [2020-09-24 20:42:01,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 20:42:01,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:01,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 20:42:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:42:01,832 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 18 states. [2020-09-24 20:42:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:02,536 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-09-24 20:42:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 20:42:02,536 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-09-24 20:42:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:02,538 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:42:02,538 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 20:42:02,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:42:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 20:42:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-24 20:42:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:42:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-24 20:42:02,548 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 45 [2020-09-24 20:42:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:02,548 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-24 20:42:02,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 20:42:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-24 20:42:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:42:02,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:02,551 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:02,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:42:02,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1138463442, now seen corresponding path program 3 times [2020-09-24 20:42:02,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:02,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617263445] [2020-09-24 20:42:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:07,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:42:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:42:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 20:42:07,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:42:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:42:07,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:42:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:08,636 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-09-24 20:42:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:08,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:42:08,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:42:08,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:08,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617263445] [2020-09-24 20:42:08,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:08,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 20:42:08,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011562940] [2020-09-24 20:42:08,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 20:42:08,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:08,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 20:42:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:42:08,910 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 24 states. [2020-09-24 20:42:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:10,198 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-24 20:42:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 20:42:10,200 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-09-24 20:42:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:10,202 INFO L225 Difference]: With dead ends: 78 [2020-09-24 20:42:10,202 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:42:10,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=326, Invalid=1654, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 20:42:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:42:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-24 20:42:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 20:42:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2020-09-24 20:42:10,220 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2020-09-24 20:42:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:10,220 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2020-09-24 20:42:10,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 20:42:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2020-09-24 20:42:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:42:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:10,222 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:10,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:42:10,222 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:10,224 INFO L82 PathProgramCache]: Analyzing trace with hash -626630542, now seen corresponding path program 4 times [2020-09-24 20:42:10,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:10,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405491164] [2020-09-24 20:42:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:15,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:42:15,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:42:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-09-24 20:42:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:42:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:42:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:15,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:42:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:42:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:42:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:42:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:42:15,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405491164] [2020-09-24 20:42:15,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:42:15,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:42:15,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905539781] [2020-09-24 20:42:15,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:42:15,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:15,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:42:15,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:42:15,975 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 16 states. [2020-09-24 20:42:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:16,148 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-09-24 20:42:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:42:16,149 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-09-24 20:42:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:16,149 INFO L225 Difference]: With dead ends: 64 [2020-09-24 20:42:16,150 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:42:16,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:42:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:42:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:42:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:42:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:42:16,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 20:42:16,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:16,155 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:42:16,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:42:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:42:16,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:42:16,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:42:16,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:42:16,331 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,331 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,331 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,333 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= |old(#length)| |#length|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-09-24 20:42:16,333 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 20:42:16,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,335 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-09-24 20:42:16,336 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:42:16,336 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:42:16,336 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 23) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point L19-1(lines 19 20) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:42:16,338 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 23) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2020-09-24 20:42:16,339 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 23) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-09-24 20:42:16,341 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 20:42:16,341 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-24 20:42:16,342 INFO L268 CegarLoopResult]: For program point L16(lines 8 23) no Hoare annotation was computed. [2020-09-24 20:42:16,342 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 20:42:16,342 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 20:42:16,343 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 20:42:16,343 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2020-09-24 20:42:16,343 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 20:42:16,343 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 20:42:16,343 INFO L264 CegarLoopResult]: At program point L12-5(lines 12 15) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2020-09-24 20:42:16,344 INFO L268 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-09-24 20:42:16,354 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-24 20:42:16,363 INFO L168 Benchmark]: Toolchain (without parser) took 24128.00 ms. Allocated memory was 143.7 MB in the beginning and 374.3 MB in the end (delta: 230.7 MB). Free memory was 101.8 MB in the beginning and 131.2 MB in the end (delta: -29.4 MB). Peak memory consumption was 201.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,365 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.54 ms. Allocated memory is still 143.7 MB. Free memory was 101.1 MB in the beginning and 91.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,373 INFO L168 Benchmark]: Boogie Preprocessor took 131.66 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 178.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,374 INFO L168 Benchmark]: RCFGBuilder took 407.21 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 162.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,374 INFO L168 Benchmark]: TraceAbstraction took 23223.05 ms. Allocated memory was 200.8 MB in the beginning and 374.3 MB in the end (delta: 173.5 MB). Free memory was 162.1 MB in the beginning and 131.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:16,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.54 ms. Allocated memory is still 143.7 MB. Free memory was 101.1 MB in the beginning and 91.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.66 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 91.2 MB in the beginning and 178.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.21 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 162.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23223.05 ms. Allocated memory was 200.8 MB in the beginning and 374.3 MB in the end (delta: 173.5 MB). Free memory was 162.1 MB in the beginning and 131.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...