/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum05-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:16:37,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:16:37,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:16:37,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:16:37,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:16:37,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:16:37,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:16:37,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:16:37,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:16:37,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:16:37,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:16:37,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:16:37,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:16:37,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:16:37,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:16:37,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:16:37,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:16:37,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:16:37,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:16:37,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:16:37,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:16:37,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:16:37,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:16:37,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:16:37,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:16:37,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:16:37,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:16:37,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:16:37,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:16:37,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:16:37,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:16:37,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:16:37,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:16:37,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:16:37,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:16:37,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:16:37,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:16:37,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:16:37,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:16:37,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:16:37,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:16:37,355 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 [2020-10-15 02:16:37,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:16:37,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:16:37,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:16:37,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:16:37,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:16:37,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:16:37,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:16:37,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:16:37,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:16:37,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:16:37,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:16:37,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:16:37,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:16:37,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:16:37,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:16:37,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:16:37,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:16:37,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:16:37,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:16:37,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:16:37,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:16:37,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:16:37,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:16:37,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:16:37,400 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:16:37,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:16:37,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:16:37,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:16:37,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:16:37,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:16:37,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum05-2.i [2020-10-15 02:16:37,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab1e2fd3/b2d89fe1bcd849bcadd029c6de00735c/FLAG292dae897 [2020-10-15 02:16:38,221 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:16:38,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum05-2.i [2020-10-15 02:16:38,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab1e2fd3/b2d89fe1bcd849bcadd029c6de00735c/FLAG292dae897 [2020-10-15 02:16:38,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab1e2fd3/b2d89fe1bcd849bcadd029c6de00735c [2020-10-15 02:16:38,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:16:38,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:16:38,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:38,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:16:38,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:16:38,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:38,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38, skipping insertion in model container [2020-10-15 02:16:38,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:38,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:16:38,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:16:38,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:38,833 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:16:38,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:38,877 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:16:38,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38 WrapperNode [2020-10-15 02:16:38,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:38,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:16:38,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:16:38,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:16:39,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (1/1) ... [2020-10-15 02:16:39,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:16:39,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:16:39,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:16:39,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:16:39,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (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 [2020-10-15 02:16:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:16:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:16:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-15 02:16:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:16:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:16:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:16:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:16:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:16:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:16:39,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:16:39,471 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:16:39,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:39 BoogieIcfgContainer [2020-10-15 02:16:39,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:16:39,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:16:39,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:16:39,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:16:39,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:16:38" (1/3) ... [2020-10-15 02:16:39,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cccaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:39, skipping insertion in model container [2020-10-15 02:16:39,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:38" (2/3) ... [2020-10-15 02:16:39,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cccaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:39, skipping insertion in model container [2020-10-15 02:16:39,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:39" (3/3) ... [2020-10-15 02:16:39,482 INFO L109 eAbstractionObserver]: Analyzing ICFG sum05-2.i [2020-10-15 02:16:39,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:16:39,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:16:39,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:16:39,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:16:39,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:16:39,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:16:39,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:16:39,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:16:39,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:16:39,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:16:39,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:16:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-15 02:16:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:16:39,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:39,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:39,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-15 02:16:39,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:39,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787492872] [2020-10-15 02:16:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:39,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:16:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-15 02:16:40,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:16:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:16:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:16:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:40,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:16:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:40,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 02:16:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:16:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 02:16:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:41,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:16:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:41,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:41,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787492872] [2020-10-15 02:16:41,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:16:41,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:16:41,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846467414] [2020-10-15 02:16:41,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:16:41,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:41,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:16:41,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:41,203 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-15 02:16:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:41,515 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-15 02:16:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:16:41,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:16:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:41,527 INFO L225 Difference]: With dead ends: 83 [2020-10-15 02:16:41,528 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 02:16:41,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 02:16:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-15 02:16:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:16:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-15 02:16:41,586 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-15 02:16:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:41,587 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-15 02:16:41,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:16:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-15 02:16:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 02:16:41,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:41,591 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 02:16:41,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:16:41,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash -222611607, now seen corresponding path program 1 times [2020-10-15 02:16:41,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:41,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591071083] [2020-10-15 02:16:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:16:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-15 02:16:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:16:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:16:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:42,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:42,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:16:42,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:42,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:42,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 02:16:42,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:16:42,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:42,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:42,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:16:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:42,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591071083] [2020-10-15 02:16:42,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:42,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:16:42,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704526635] [2020-10-15 02:16:42,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:16:42,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:16:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:16:42,626 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-15 02:16:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:42,717 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-15 02:16:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:16:42,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-15 02:16:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:42,719 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:16:42,719 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 02:16:42,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 02:16:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-15 02:16:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 02:16:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-15 02:16:42,727 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-15 02:16:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:42,728 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-15 02:16:42,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:16:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-15 02:16:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 02:16:42,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:42,730 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:42,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:16:42,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1311690489, now seen corresponding path program 2 times [2020-10-15 02:16:42,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:42,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156996328] [2020-10-15 02:16:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:16:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 02:16:47,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:16:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:16:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:16:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:48,287 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-15 02:16:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:48,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:16:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-15 02:16:48,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:48,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:16:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:16:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:49,858 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-15 02:16:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 02:16:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:50,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:16:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-15 02:16:50,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:50,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:16:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 02:16:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:50,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:16:50,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 02:16:50,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:50,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:16:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:16:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1