/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=1000 --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-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:35:38,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:35:38,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:35:38,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:35:38,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:35:38,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:35:38,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:35:38,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:35:38,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:35:38,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:35:38,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:35:38,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:35:38,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:35:38,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:35:38,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:35:38,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:35:38,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:35:38,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:35:38,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:35:38,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:35:38,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:35:38,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:35:38,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:35:38,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:35:38,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:35:38,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:35:38,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:35:38,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:35:38,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:35:38,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 19:35:38,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:35:38,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:35:38,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:35:38,819 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 19:35:38,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:35:38,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:35:38,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:35:38,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:35:38,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:35:38,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:35:38,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:35:38,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:35:38,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:35:38,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:35:38,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:35:38,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:35:38,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:35:38,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:35:38,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:35:38,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:35:38,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:35:38,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:35:38,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:35:38,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:35:38,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:35:38,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:35:38,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:35:38,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:35:38,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:35:38,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:35:38,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:35:38,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:35:38,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:35:38,888 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:35:39,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:35:39,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:35:39,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:35:39,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:35:39,361 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:35:39,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-09-24 19:35:39,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3051ad08d/372815a66ed941a282565af713e600ba/FLAGa821c4c86 [2020-09-24 19:35:40,002 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:35:40,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq1.c [2020-09-24 19:35:40,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3051ad08d/372815a66ed941a282565af713e600ba/FLAGa821c4c86 [2020-09-24 19:35:40,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3051ad08d/372815a66ed941a282565af713e600ba [2020-09-24 19:35:40,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:35:40,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:35:40,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:40,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:35:40,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:35:40,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a942a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40, skipping insertion in model container [2020-09-24 19:35:40,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:35:40,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:35:40,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:40,600 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:35:40,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:35:40,634 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:35:40,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40 WrapperNode [2020-09-24 19:35:40,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:35:40,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:35:40,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:35:40,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:35:40,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (1/1) ... [2020-09-24 19:35:40,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:35:40,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:35:40,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:35:40,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:35:40,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (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 19:35:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:35:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:35:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:35:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:35:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:35:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 19:35:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:35:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:35:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:35:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:35:41,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:35:41,083 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:35:41,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:41 BoogieIcfgContainer [2020-09-24 19:35:41,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:35:41,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:35:41,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:35:41,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:35:41,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:40" (1/3) ... [2020-09-24 19:35:41,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e858dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:41, skipping insertion in model container [2020-09-24 19:35:41,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:40" (2/3) ... [2020-09-24 19:35:41,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e858dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:41, skipping insertion in model container [2020-09-24 19:35:41,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:41" (3/3) ... [2020-09-24 19:35:41,116 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-09-24 19:35:41,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:35:41,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:35:41,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:35:41,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:35:41,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:35:41,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:35:41,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:35:41,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:35:41,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:35:41,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:35:41,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:35:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-24 19:35:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 19:35:41,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:41,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:41,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:41,260 INFO L82 PathProgramCache]: Analyzing trace with hash 635191250, now seen corresponding path program 1 times [2020-09-24 19:35:41,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:41,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293979722] [2020-09-24 19:35:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:35:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:35:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 19:35:41,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:41,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 19:35:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:35:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:35:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:41,746 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 19:35:41,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293979722] [2020-09-24 19:35:41,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:41,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 19:35:41,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40925468] [2020-09-24 19:35:41,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 19:35:41,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:41,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 19:35:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 19:35:41,784 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-24 19:35:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:41,817 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-09-24 19:35:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 19:35:41,819 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-24 19:35:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:41,829 INFO L225 Difference]: With dead ends: 52 [2020-09-24 19:35:41,830 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 19:35:41,835 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 19:35:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 19:35:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 19:35:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 19:35:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 19:35:41,884 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 15 [2020-09-24 19:35:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:41,885 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 19:35:41,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 19:35:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 19:35:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 19:35:41,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:41,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:41,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:35:41,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:41,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1725587167, now seen corresponding path program 1 times [2020-09-24 19:35:41,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:41,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790897232] [2020-09-24 19:35:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:42,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:42,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:35:42,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-24 19:35:42,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:42,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:35:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:35:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:42,666 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-09-24 19:35:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:42,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:42,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:35:42,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:42,730 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 19:35:42,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790897232] [2020-09-24 19:35:42,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:35:42,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:35:42,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133986566] [2020-09-24 19:35:42,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:35:42,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:35:42,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:35:42,737 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 6 states. [2020-09-24 19:35:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:42,858 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-09-24 19:35:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:35:42,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-24 19:35:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:42,864 INFO L225 Difference]: With dead ends: 63 [2020-09-24 19:35:42,867 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 19:35:42,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:35:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 19:35:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2020-09-24 19:35:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 19:35:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 19:35:42,892 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 16 [2020-09-24 19:35:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:42,894 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 19:35:42,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:35:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 19:35:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:35:42,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:42,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:42,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:35:42,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:42,898 INFO L82 PathProgramCache]: Analyzing trace with hash -82059580, now seen corresponding path program 1 times [2020-09-24 19:35:42,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:42,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337331589] [2020-09-24 19:35:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:43,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:35:43,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 19:35:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:35:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:35:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:43,606 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-09-24 19:35:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:43,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:43,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:43,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:43,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:43,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:43,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337331589] [2020-09-24 19:35:43,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:43,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:35:43,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682441384] [2020-09-24 19:35:43,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:35:43,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:43,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:35:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:35:43,649 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-09-24 19:35:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:43,730 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-09-24 19:35:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:35:43,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 19:35:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:43,733 INFO L225 Difference]: With dead ends: 53 [2020-09-24 19:35:43,733 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 19:35:43,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:35:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 19:35:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-09-24 19:35:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 19:35:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-24 19:35:43,741 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 26 [2020-09-24 19:35:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:43,742 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-24 19:35:43,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:35:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-24 19:35:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:35:43,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:43,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:43,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:35:43,744 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:43,744 INFO L82 PathProgramCache]: Analyzing trace with hash -697570748, now seen corresponding path program 1 times [2020-09-24 19:35:43,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:43,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173142622] [2020-09-24 19:35:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:43,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:43,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:35:43,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:43,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 19:35:43,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:35:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:43,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:35:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:44,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:44,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:44,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:35:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:44,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173142622] [2020-09-24 19:35:44,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:44,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:35:44,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034877386] [2020-09-24 19:35:44,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:35:44,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:44,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:35:44,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:35:44,105 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 8 states. [2020-09-24 19:35:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:44,232 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-09-24 19:35:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:35:44,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 19:35:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:44,234 INFO L225 Difference]: With dead ends: 83 [2020-09-24 19:35:44,234 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 19:35:44,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:35:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 19:35:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-09-24 19:35:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 19:35:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-09-24 19:35:44,245 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 26 [2020-09-24 19:35:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:44,245 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-09-24 19:35:44,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:35:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-09-24 19:35:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 19:35:44,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:44,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:44,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:35:44,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:44,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1924042729, now seen corresponding path program 1 times [2020-09-24 19:35:44,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:44,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503272264] [2020-09-24 19:35:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 19:35:44,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 19:35:44,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:35:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:35:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:44,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:44,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:35:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:44,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503272264] [2020-09-24 19:35:44,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:44,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:35:44,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122459507] [2020-09-24 19:35:44,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:35:44,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:35:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:35:44,984 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 10 states. [2020-09-24 19:35:45,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:45,116 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-09-24 19:35:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:35:45,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 19:35:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:45,118 INFO L225 Difference]: With dead ends: 96 [2020-09-24 19:35:45,119 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 19:35:45,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:35:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 19:35:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 53. [2020-09-24 19:35:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 19:35:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-09-24 19:35:45,127 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2020-09-24 19:35:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:45,128 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-09-24 19:35:45,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:35:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-09-24 19:35:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 19:35:45,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:35:45,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:35:45,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:35:45,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:35:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:35:45,130 INFO L82 PathProgramCache]: Analyzing trace with hash -726257687, now seen corresponding path program 2 times [2020-09-24 19:35:45,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:35:45,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655144586] [2020-09-24 19:35:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:35:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 19:35:45,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 19:35:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:35:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:35:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:35:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:35:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:35:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:35:45,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:35:45,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:35:45,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:35:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:35:45,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:35:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:35:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:35:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:35:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:35:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:35:45,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655144586] [2020-09-24 19:35:45,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:35:45,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:35:45,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743848739] [2020-09-24 19:35:45,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:35:45,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:35:45,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:35:45,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:35:45,820 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 10 states. [2020-09-24 19:35:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:35:45,954 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-09-24 19:35:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:35:45,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 19:35:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:35:45,955 INFO L225 Difference]: With dead ends: 53 [2020-09-24 19:35:45,955 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:35:45,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:35:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:35:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:35:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:35:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:35:45,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-24 19:35:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:35:45,959 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:35:45,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:35:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:35:45,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:35:45,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:35:45,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:35:46,124 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:35:46,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:46,125 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:35:46,125 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:35:46,125 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:35:46,125 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:35:46,125 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 19:35:46,126 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 19:35:46,127 INFO L264 CegarLoopResult]: At program point L15-4(lines 14 20) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~x~0 main_~w~0) (<= main_~z~0 main_~y~0) (<= main_~w~0 main_~x~0)) [2020-09-24 19:35:46,127 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2020-09-24 19:35:46,127 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,127 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,127 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 19:35:46,128 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-24 19:35:46,129 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 19:35:46,130 INFO L264 CegarLoopResult]: At program point L14-4(lines 14 20) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296))) (.cse3 (+ main_~x~0 (* 4294967296 (div main_~w~0 4294967296)))) (.cse2 (* 4294967296 (div main_~x~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= (+ main_~w~0 .cse2) .cse3) (< .cse3 (+ main_~w~0 .cse2 1)) (<= main_~z~0 main_~y~0) (<= main_~w~0 main_~x~0))) [2020-09-24 19:35:46,130 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 19:35:46,130 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 19:35:46,130 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 19:35:46,130 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 19:35:46,131 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 19:35:46,131 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 19:35:46,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:46 BoogieIcfgContainer [2020-09-24 19:35:46,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:35:46,158 INFO L168 Benchmark]: Toolchain (without parser) took 5834.33 ms. Allocated memory was 137.9 MB in the beginning and 250.1 MB in the end (delta: 112.2 MB). Free memory was 100.3 MB in the beginning and 134.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:46,159 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:35:46,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.19 ms. Allocated memory is still 137.9 MB. Free memory was 99.7 MB in the beginning and 90.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:46,161 INFO L168 Benchmark]: Boogie Preprocessor took 127.00 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 179.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:46,162 INFO L168 Benchmark]: RCFGBuilder took 327.56 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:46,163 INFO L168 Benchmark]: TraceAbstraction took 5050.35 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:35:46,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.9 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.19 ms. Allocated memory is still 137.9 MB. Free memory was 99.7 MB in the beginning and 90.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.00 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 90.2 MB in the beginning and 179.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.56 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5050.35 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: ((y <= z && x <= w) && z <= y) && w <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 187 SDslu, 569 SDs, 0 SdLazy, 290 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 19 NumberOfFragments, 87 HoareAnnotationTreeSize, 12 FomulaSimplifications, 230 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 95796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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...