/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:25:43,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:25:43,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:25:43,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:25:43,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:25:43,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:25:43,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:25:43,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:25:43,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:25:43,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:25:43,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:25:43,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:25:43,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:25:43,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:25:43,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:25:43,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:25:43,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:25:43,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:25:43,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:25:43,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:25:43,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:25:43,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:25:43,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:25:43,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:25:43,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:25:43,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:25:43,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:25:43,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:25:43,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:25:43,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:25:43,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:25:43,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:25:43,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:25:43,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:25:43,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:25:43,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:25:43,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:25:43,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:25:43,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:25:43,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:25:43,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:25:43,584 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 [2020-08-22 06:25:43,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:25:43,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:25:43,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:25:43,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:25:43,608 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:25:43,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:25:43,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:25:43,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:25:43,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:25:43,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:25:43,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:25:43,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:25:43,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:25:43,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:25:43,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:25:43,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:25:43,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:25:43,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:25:43,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:25:43,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:25:43,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:25:43,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:25:43,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:25:43,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:25:43,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:25:43,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:25:43,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:25:43,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:25:43,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:25:43,614 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:25:43,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:25:43,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:25:43,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:25:43,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:25:43,946 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:25:43,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-22 06:25:44,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/111fcfb32/29d26bbefb3d453395c90a4271ee0025/FLAG43f9c1091 [2020-08-22 06:25:44,433 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:25:44,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-22 06:25:44,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/111fcfb32/29d26bbefb3d453395c90a4271ee0025/FLAG43f9c1091 [2020-08-22 06:25:44,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/111fcfb32/29d26bbefb3d453395c90a4271ee0025 [2020-08-22 06:25:44,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:25:44,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:25:44,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:25:44,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:25:44,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:25:44,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:25:44" (1/1) ... [2020-08-22 06:25:44,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207e6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:44, skipping insertion in model container [2020-08-22 06:25:44,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:25:44" (1/1) ... [2020-08-22 06:25:44,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:25:44,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:25:45,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:25:45,121 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:25:45,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:25:45,156 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:25:45,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45 WrapperNode [2020-08-22 06:25:45,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:25:45,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:25:45,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:25:45,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:25:45,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (1/1) ... [2020-08-22 06:25:45,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:25:45,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:25:45,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:25:45,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:25:45,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (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 [2020-08-22 06:25:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:25:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:25:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:25:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:25:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:25:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:25:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:25:45,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:25:45,590 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:25:45,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:25:45 BoogieIcfgContainer [2020-08-22 06:25:45,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:25:45,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:25:45,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:25:45,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:25:45,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:25:44" (1/3) ... [2020-08-22 06:25:45,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25562167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:25:45, skipping insertion in model container [2020-08-22 06:25:45,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:25:45" (2/3) ... [2020-08-22 06:25:45,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25562167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:25:45, skipping insertion in model container [2020-08-22 06:25:45,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:25:45" (3/3) ... [2020-08-22 06:25:45,606 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-22 06:25:45,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:25:45,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:25:45,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:25:45,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:25:45,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:25:45,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:25:45,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:25:45,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:25:45,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:25:45,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:25:45,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:25:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-22 06:25:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 06:25:45,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:45,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:45,715 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-22 06:25:45,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:45,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557933578] [2020-08-22 06:25:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:45,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557933578] [2020-08-22 06:25:45,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:25:45,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:25:45,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73778535] [2020-08-22 06:25:45,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:25:45,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:45,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:25:45,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:25:45,924 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-22 06:25:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:45,986 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-22 06:25:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:25:45,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-22 06:25:45,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:45,999 INFO L225 Difference]: With dead ends: 37 [2020-08-22 06:25:45,999 INFO L226 Difference]: Without dead ends: 18 [2020-08-22 06:25:46,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:25:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-22 06:25:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-22 06:25:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-22 06:25:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-22 06:25:46,044 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-22 06:25:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:46,045 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-22 06:25:46,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:25:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-22 06:25:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 06:25:46,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:46,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:46,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:25:46,047 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-22 06:25:46,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:46,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640858077] [2020-08-22 06:25:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:46,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640858077] [2020-08-22 06:25:46,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:25:46,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:25:46,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984491469] [2020-08-22 06:25:46,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:25:46,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:25:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:25:46,454 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-22 06:25:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:52,921 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-08-22 06:25:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:25:52,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-22 06:25:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:52,924 INFO L225 Difference]: With dead ends: 29 [2020-08-22 06:25:52,924 INFO L226 Difference]: Without dead ends: 24 [2020-08-22 06:25:52,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:25:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-22 06:25:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2020-08-22 06:25:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 06:25:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-22 06:25:52,942 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-22 06:25:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:52,942 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-22 06:25:52,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:25:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-22 06:25:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 06:25:52,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:52,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:52,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:25:52,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-22 06:25:52,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:52,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293264981] [2020-08-22 06:25:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:53,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293264981] [2020-08-22 06:25:53,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:53,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:25:53,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618977781] [2020-08-22 06:25:53,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:25:53,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:53,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:25:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:25:53,635 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-22 06:25:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:56,236 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-22 06:25:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:25:56,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-22 06:25:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:56,239 INFO L225 Difference]: With dead ends: 40 [2020-08-22 06:25:56,239 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 06:25:56,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-22 06:25:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 06:25:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-22 06:25:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 06:25:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-22 06:25:56,248 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-22 06:25:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:56,249 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-22 06:25:56,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:25:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-22 06:25:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 06:25:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:56,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:56,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:25:56,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-22 06:25:56,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:56,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819514898] [2020-08-22 06:25:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:56,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819514898] [2020-08-22 06:25:56,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:56,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:25:56,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281098541] [2020-08-22 06:25:56,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:25:56,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:25:56,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:25:56,620 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-22 06:25:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:57,011 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-22 06:25:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:25:57,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-22 06:25:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:57,013 INFO L225 Difference]: With dead ends: 38 [2020-08-22 06:25:57,013 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 06:25:57,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:25:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 06:25:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-22 06:25:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 06:25:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-22 06:25:57,027 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-22 06:25:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:57,027 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-22 06:25:57,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:25:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-22 06:25:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 06:25:57,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:57,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:57,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:25:57,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-22 06:25:57,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:57,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457317846] [2020-08-22 06:25:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:57,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457317846] [2020-08-22 06:25:57,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:57,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 06:25:57,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163214715] [2020-08-22 06:25:57,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:25:57,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:57,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:25:57,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:25:57,183 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-22 06:25:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:57,290 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-22 06:25:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:25:57,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-22 06:25:57,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:57,292 INFO L225 Difference]: With dead ends: 38 [2020-08-22 06:25:57,292 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 06:25:57,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:25:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 06:25:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-22 06:25:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-22 06:25:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-22 06:25:57,307 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-22 06:25:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:57,307 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-22 06:25:57,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:25:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-22 06:25:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 06:25:57,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:57,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:57,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:25:57,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-22 06:25:57,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:57,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046102945] [2020-08-22 06:25:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:57,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046102945] [2020-08-22 06:25:57,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:57,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 06:25:57,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159966041] [2020-08-22 06:25:57,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:25:57,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:25:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:25:57,691 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-22 06:25:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:57,912 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-22 06:25:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:25:57,914 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-22 06:25:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:57,915 INFO L225 Difference]: With dead ends: 37 [2020-08-22 06:25:57,915 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 06:25:57,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:25:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 06:25:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-22 06:25:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 06:25:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-22 06:25:57,926 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-22 06:25:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:57,926 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-22 06:25:57,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:25:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-22 06:25:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:25:57,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:57,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:57,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:25:57,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-22 06:25:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:57,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660025741] [2020-08-22 06:25:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:58,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660025741] [2020-08-22 06:25:58,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:58,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 06:25:58,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114811904] [2020-08-22 06:25:58,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:25:58,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:58,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:25:58,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:25:58,067 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-22 06:25:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:58,158 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-22 06:25:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:25:58,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 06:25:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:58,159 INFO L225 Difference]: With dead ends: 38 [2020-08-22 06:25:58,159 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 06:25:58,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:25:58,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 06:25:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-22 06:25:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 06:25:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-22 06:25:58,165 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-22 06:25:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:58,166 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-22 06:25:58,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:25:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-22 06:25:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:25:58,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:58,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:58,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:25:58,167 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-22 06:25:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:58,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691996907] [2020-08-22 06:25:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:58,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:58,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691996907] [2020-08-22 06:25:58,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:58,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 06:25:58,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094546246] [2020-08-22 06:25:58,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 06:25:58,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 06:25:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:25:58,888 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-22 06:25:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:25:59,675 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-22 06:25:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:25:59,676 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-22 06:25:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:25:59,677 INFO L225 Difference]: With dead ends: 37 [2020-08-22 06:25:59,677 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 06:25:59,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-22 06:25:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 06:25:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-22 06:25:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 06:25:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-22 06:25:59,689 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-22 06:25:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:25:59,690 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-22 06:25:59,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 06:25:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-22 06:25:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 06:25:59,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:25:59,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:25:59,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:25:59,694 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:25:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:25:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-22 06:25:59,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:25:59,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632132937] [2020-08-22 06:25:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:25:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:25:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:25:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:25:59,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632132937] [2020-08-22 06:25:59,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:25:59,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:25:59,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142414488] [2020-08-22 06:25:59,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:25:59,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:25:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:25:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:25:59,887 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-22 06:26:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:04,212 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-22 06:26:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:26:04,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-22 06:26:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:04,215 INFO L225 Difference]: With dead ends: 41 [2020-08-22 06:26:04,215 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 06:26:04,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:04,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 06:26:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-22 06:26:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 06:26:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-22 06:26:04,233 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-22 06:26:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:04,233 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-22 06:26:04,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:26:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-22 06:26:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 06:26:04,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:04,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:04,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:26:04,237 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-22 06:26:04,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:04,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634727266] [2020-08-22 06:26:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:04,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634727266] [2020-08-22 06:26:04,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:04,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:26:04,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890569080] [2020-08-22 06:26:04,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:26:04,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:04,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:26:04,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:26:04,372 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-22 06:26:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:04,507 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-22 06:26:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:26:04,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-22 06:26:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:04,509 INFO L225 Difference]: With dead ends: 44 [2020-08-22 06:26:04,509 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 06:26:04,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:26:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 06:26:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-22 06:26:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 06:26:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-22 06:26:04,520 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-22 06:26:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:04,521 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-22 06:26:04,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:26:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-22 06:26:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:26:04,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:04,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:04,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:26:04,525 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:04,526 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-22 06:26:04,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:04,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233859830] [2020-08-22 06:26:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:26:06,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233859830] [2020-08-22 06:26:06,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:26:06,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 06:26:06,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658406168] [2020-08-22 06:26:06,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:26:06,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:26:06,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-22 06:26:06,807 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-22 06:26:08,972 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2020-08-22 06:26:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:19,446 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-08-22 06:26:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:26:19,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-22 06:26:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:19,448 INFO L225 Difference]: With dead ends: 43 [2020-08-22 06:26:19,449 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 06:26:19,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=26, Invalid=61, Unknown=3, NotChecked=0, Total=90 [2020-08-22 06:26:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 06:26:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-08-22 06:26:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 06:26:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-22 06:26:19,454 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-22 06:26:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:19,455 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-22 06:26:19,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:26:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-22 06:26:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 06:26:19,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:19,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:19,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:26:19,456 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:19,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-22 06:26:19,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:19,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438431121] [2020-08-22 06:26:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 06:26:19,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438431121] [2020-08-22 06:26:19,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:19,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:26:19,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993391481] [2020-08-22 06:26:19,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:26:19,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:19,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:26:19,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:26:19,598 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-22 06:26:19,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:19,723 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-22 06:26:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:26:19,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 06:26:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:19,724 INFO L225 Difference]: With dead ends: 31 [2020-08-22 06:26:19,724 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:26:19,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:26:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:26:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:26:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:26:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:26:19,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-22 06:26:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:19,728 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:26:19,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:26:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:26:19,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:26:19,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 06:26:19,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:26:19,885 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 06:26:19,886 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-22 06:26:19,886 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:26:19,886 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:26:19,887 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-22 06:26:19,887 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 06:26:19,887 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 06:26:19,887 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:26:19,887 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-22 06:26:19,888 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-22 06:26:19,889 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-22 06:26:19,889 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 06:26:19,889 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0) 4294967296)))) (and (<= (+ main_~l~0 .cse0) .cse1) (< .cse1 (+ main_~l~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-22 06:26:19,889 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-22 06:26:19,889 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-22 06:26:19,890 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-22 06:26:19,894 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 06:26:19,894 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:26:19,894 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 06:26:19,894 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 06:26:19,894 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:26:19,894 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 06:26:19,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:26:19 BoogieIcfgContainer [2020-08-22 06:26:19,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:26:19,932 INFO L168 Benchmark]: Toolchain (without parser) took 35045.93 ms. Allocated memory was 140.0 MB in the beginning and 276.3 MB in the end (delta: 136.3 MB). Free memory was 102.9 MB in the beginning and 223.1 MB in the end (delta: -120.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:19,934 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:26:19,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.46 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:19,936 INFO L168 Benchmark]: Boogie Preprocessor took 119.04 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:19,937 INFO L168 Benchmark]: RCFGBuilder took 316.68 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:19,943 INFO L168 Benchmark]: TraceAbstraction took 34330.59 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 166.1 MB in the beginning and 223.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:19,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.46 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.04 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.68 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 166.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34330.59 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 166.1 MB in the beginning and 223.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 16.5 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: 19]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 533 SDslu, 241 SDs, 0 SdLazy, 784 SolverSat, 137 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 27 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 533 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 52122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 42/80 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...