/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:31:04,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:31:04,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:31:04,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:31:04,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:31:04,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:31:04,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:31:04,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:31:04,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:31:04,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:31:04,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:31:04,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:31:04,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:31:04,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:31:04,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:31:04,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:31:04,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:31:04,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:31:04,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:31:04,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:31:04,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:31:04,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:31:04,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:31:04,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:31:04,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:31:04,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:31:04,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:31:04,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:31:04,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:31:04,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:31:04,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:31:04,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:31:04,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:31:04,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:31:04,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:31:04,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:31:04,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:31:04,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:31:04,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:31:04,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:31:04,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:31:04,192 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 18:31:04,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:31:04,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:31:04,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:31:04,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:31:04,249 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:31:04,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:31:04,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:31:04,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:31:04,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:31:04,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:31:04,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:31:04,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:31:04,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:31:04,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:31:04,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:31:04,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:31:04,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:31:04,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:31:04,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:31:04,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:31:04,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:31:04,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:31:04,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:31:04,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:31:04,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:31:04,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:31:04,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:31:04,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:31:04,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:31:04,255 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:31:04,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:31:04,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:31:04,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:31:04,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:31:04,755 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:31:04,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-09-24 18:31:04,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e55aa48f/76265ee14cc340c6a943f3e596a68d9e/FLAGdbdfbb0d1 [2020-09-24 18:31:05,380 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:31:05,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2020-09-24 18:31:05,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e55aa48f/76265ee14cc340c6a943f3e596a68d9e/FLAGdbdfbb0d1 [2020-09-24 18:31:05,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e55aa48f/76265ee14cc340c6a943f3e596a68d9e [2020-09-24 18:31:05,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:31:05,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:31:05,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:05,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:31:05,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:31:05,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:05" (1/1) ... [2020-09-24 18:31:05,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:05, skipping insertion in model container [2020-09-24 18:31:05,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:05" (1/1) ... [2020-09-24 18:31:05,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:31:05,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:31:06,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:06,025 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:31:06,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:06,074 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:31:06,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06 WrapperNode [2020-09-24 18:31:06,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:06,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:31:06,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:31:06,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:31:06,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (1/1) ... [2020-09-24 18:31:06,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:31:06,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:31:06,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:31:06,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:31:06,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (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 18:31:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:31:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:31:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:31:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:06,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:06,516 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:31:06,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:06 BoogieIcfgContainer [2020-09-24 18:31:06,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:06,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:06,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:06,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:06,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:31:05" (1/3) ... [2020-09-24 18:31:06,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:06, skipping insertion in model container [2020-09-24 18:31:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:06" (2/3) ... [2020-09-24 18:31:06,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:06, skipping insertion in model container [2020-09-24 18:31:06,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:06" (3/3) ... [2020-09-24 18:31:06,558 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c [2020-09-24 18:31:06,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:06,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:31:06,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:31:06,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:06,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:06,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:06,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:06,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:06,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:06,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:06,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-24 18:31:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 18:31:06,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:06,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:06,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:06,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1436140310, now seen corresponding path program 1 times [2020-09-24 18:31:06,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:06,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656570931] [2020-09-24 18:31:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:06,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:06,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 18:31:06,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:31:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 18:31:06,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:06,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:06,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:31:06,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:06,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:31:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:07,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:07,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:31:07,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:07,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:07,024 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 18:31:07,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656570931] [2020-09-24 18:31:07,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:07,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 18:31:07,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850320988] [2020-09-24 18:31:07,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 18:31:07,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:07,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 18:31:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:31:07,055 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-09-24 18:31:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:07,083 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:31:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 18:31:07,085 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 18:31:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:07,095 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:31:07,095 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 18:31:07,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 18:31:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 18:31:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 18:31:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 18:31:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-24 18:31:07,140 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-09-24 18:31:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:07,141 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-24 18:31:07,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 18:31:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-24 18:31:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 18:31:07,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:07,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:07,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:31:07,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1309792647, now seen corresponding path program 1 times [2020-09-24 18:31:07,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:07,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235071542] [2020-09-24 18:31:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:31:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 18:31:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:31:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:31:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:31:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:31:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:07,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:31:07,389 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 18:31:07,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235071542] [2020-09-24 18:31:07,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:07,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:31:07,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129170917] [2020-09-24 18:31:07,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:31:07,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:31:07,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:31:07,400 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-09-24 18:31:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:07,434 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-09-24 18:31:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:31:07,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-24 18:31:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:07,437 INFO L225 Difference]: With dead ends: 54 [2020-09-24 18:31:07,437 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 18:31:07,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:31:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 18:31:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2020-09-24 18:31:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 18:31:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-24 18:31:07,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 14 [2020-09-24 18:31:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:07,447 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-24 18:31:07,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:31:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-24 18:31:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 18:31:07,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:07,449 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:07,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:31:07,449 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1704587139, now seen corresponding path program 1 times [2020-09-24 18:31:07,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:07,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834404788] [2020-09-24 18:31:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:31:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-24 18:31:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:31:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:31:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:31:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:08,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:08,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:08,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:31:08,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:08,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834404788] [2020-09-24 18:31:08,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:08,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:31:08,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283897076] [2020-09-24 18:31:08,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:31:08,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:31:08,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:31:08,327 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-09-24 18:31:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:14,759 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-09-24 18:31:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:31:14,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-24 18:31:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:14,762 INFO L225 Difference]: With dead ends: 74 [2020-09-24 18:31:14,762 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 18:31:14,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 18:31:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-24 18:31:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 18:31:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-09-24 18:31:14,770 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20 [2020-09-24 18:31:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:14,770 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-09-24 18:31:14,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:31:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-09-24 18:31:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 18:31:14,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:14,772 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] [2020-09-24 18:31:14,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:31:14,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:14,775 INFO L82 PathProgramCache]: Analyzing trace with hash -110349398, now seen corresponding path program 1 times [2020-09-24 18:31:14,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:14,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239033959] [2020-09-24 18:31:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:15,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:15,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:31:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-24 18:31:15,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:31:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:31:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:31:15,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:15,445 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 18 [2020-09-24 18:31:15,607 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 17 [2020-09-24 18:31:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:31:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:31:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:31:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:31:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:31:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:31:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:31:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:31:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:31:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:31:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:31:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:31:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:31:15,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239033959] [2020-09-24 18:31:15,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:31:15,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:31:15,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148032057] [2020-09-24 18:31:15,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:31:15,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:31:15,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:31:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:31:15,641 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-09-24 18:31:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:31:19,931 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-09-24 18:31:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:31:19,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-09-24 18:31:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:31:19,933 INFO L225 Difference]: With dead ends: 75 [2020-09-24 18:31:19,933 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:31:19,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:31:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:31:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:31:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:31:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:31:19,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-24 18:31:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:31:19,937 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:31:19,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:31:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:31:19,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:31:19,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:31:19,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:31:20,051 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 18:31:20,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:20,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:31:20,052 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:31:20,052 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:31:20,052 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:31:20,052 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0) [2020-09-24 18:31:20,052 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 18:31:20,053 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 18:31:20,054 INFO L264 CegarLoopResult]: At program point L23-5(lines 16 29) the Hoare annotation is: (or (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0) (and (<= (div main_~y~0 4294967296) 0) (<= 1 main_~y~0))) [2020-09-24 18:31:20,054 INFO L268 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2020-09-24 18:31:20,054 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed. [2020-09-24 18:31:20,054 INFO L268 CegarLoopResult]: For program point L30(lines 30 31) no Hoare annotation was computed. [2020-09-24 18:31:20,054 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L20(lines 20 27) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:31:20,055 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L268 CegarLoopResult]: For program point L16-1(lines 16 29) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L268 CegarLoopResult]: For program point L16-5(lines 12 33) no Hoare annotation was computed. [2020-09-24 18:31:20,056 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 10) the Hoare annotation is: true [2020-09-24 18:31:20,057 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 10) no Hoare annotation was computed. [2020-09-24 18:31:20,057 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 18:31:20,057 INFO L268 CegarLoopResult]: For program point L7(lines 7 8) no Hoare annotation was computed. [2020-09-24 18:31:20,057 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 10) no Hoare annotation was computed. [2020-09-24 18:31:20,057 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 18:31:20,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:31:20 BoogieIcfgContainer [2020-09-24 18:31:20,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:31:20,082 INFO L168 Benchmark]: Toolchain (without parser) took 14343.61 ms. Allocated memory was 111.1 MB in the beginning and 209.7 MB in the end (delta: 98.6 MB). Free memory was 74.7 MB in the beginning and 161.5 MB in the end (delta: -86.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,084 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory was 92.0 MB in the beginning and 91.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.68 ms. Allocated memory was 111.1 MB in the beginning and 124.8 MB in the end (delta: 13.6 MB). Free memory was 74.1 MB in the beginning and 100.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,086 INFO L168 Benchmark]: Boogie Preprocessor took 108.44 ms. Allocated memory was 124.8 MB in the beginning and 164.6 MB in the end (delta: 39.8 MB). Free memory was 100.0 MB in the beginning and 151.1 MB in the end (delta: -51.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,087 INFO L168 Benchmark]: RCFGBuilder took 339.06 ms. Allocated memory is still 164.6 MB. Free memory was 150.6 MB in the beginning and 137.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,088 INFO L168 Benchmark]: TraceAbstraction took 13542.43 ms. Allocated memory was 164.6 MB in the beginning and 209.7 MB in the end (delta: 45.1 MB). Free memory was 137.1 MB in the beginning and 161.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:20,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory was 92.0 MB in the beginning and 91.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.68 ms. Allocated memory was 111.1 MB in the beginning and 124.8 MB in the end (delta: 13.6 MB). Free memory was 74.1 MB in the beginning and 100.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.44 ms. Allocated memory was 124.8 MB in the beginning and 164.6 MB in the end (delta: 39.8 MB). Free memory was 100.0 MB in the beginning and 151.1 MB in the end (delta: -51.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.06 ms. Allocated memory is still 164.6 MB. Free memory was 150.6 MB in the beginning and 137.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13542.43 ms. Allocated memory was 164.6 MB in the beginning and 209.7 MB in the end (delta: 45.1 MB). Free memory was 137.1 MB in the beginning and 161.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x / 4294967296 * 4294967296 + (x + x / 4294967296 * -4294967296) / 3 * 3 + (x + x / 4294967296 * -4294967296 + (x + x / 4294967296 * -4294967296) / 3 * -3) / 4294967296 * 4294967296 == x || (y / 4294967296 <= 0 && 1 <= y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 35 SDslu, 275 SDs, 0 SdLazy, 82 SolverSat, 8 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 97 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 13477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...