/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 17:39:55,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 17:39:55,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 17:39:55,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 17:39:55,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 17:39:55,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 17:39:55,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 17:39:55,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 17:39:55,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 17:39:55,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 17:39:55,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 17:39:55,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 17:39:55,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 17:39:55,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 17:39:55,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 17:39:55,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 17:39:55,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 17:39:55,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 17:39:55,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 17:39:55,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 17:39:55,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 17:39:55,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 17:39:55,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 17:39:55,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 17:39:55,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 17:39:55,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 17:39:55,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 17:39:55,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 17:39:55,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 17:39:55,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 17:39:55,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 17:39:55,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 17:39:55,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 17:39:55,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 17:39:55,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 17:39:55,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 17:39:55,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 17:39:55,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 17:39:55,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 17:39:55,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 17:39:55,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 17:39:55,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 17:39:55,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 17:39:55,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 17:39:55,165 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 17:39:55,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 17:39:55,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 17:39:55,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 17:39:55,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 17:39:55,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 17:39:55,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 17:39:55,166 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 17:39:55,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 17:39:55,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 17:39:55,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 17:39:55,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 17:39:55,519 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 17:39:55,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-08 17:39:55,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de33eba30/1bf8115ada064771b5dccf826c6eabe3/FLAG7701fcc24 [2020-07-08 17:39:56,126 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 17:39:56,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-08 17:39:56,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de33eba30/1bf8115ada064771b5dccf826c6eabe3/FLAG7701fcc24 [2020-07-08 17:39:56,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de33eba30/1bf8115ada064771b5dccf826c6eabe3 [2020-07-08 17:39:56,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 17:39:56,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 17:39:56,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 17:39:56,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 17:39:56,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 17:39:56,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d25e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56, skipping insertion in model container [2020-07-08 17:39:56,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 17:39:56,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 17:39:56,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:39:56,734 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 17:39:56,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:39:56,765 INFO L208 MainTranslator]: Completed translation [2020-07-08 17:39:56,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56 WrapperNode [2020-07-08 17:39:56,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 17:39:56,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 17:39:56,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 17:39:56,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 17:39:56,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... [2020-07-08 17:39:56,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 17:39:56,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 17:39:56,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 17:39:56,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 17:39:56,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-08 17:39:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 17:39:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 17:39:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 17:39:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 17:39:56,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 17:39:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 17:39:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 17:39:57,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 17:39:57,340 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 17:39:57,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:39:57 BoogieIcfgContainer [2020-07-08 17:39:57,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 17:39:57,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 17:39:57,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 17:39:57,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 17:39:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 05:39:56" (1/3) ... [2020-07-08 17:39:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532db4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:39:57, skipping insertion in model container [2020-07-08 17:39:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:39:56" (2/3) ... [2020-07-08 17:39:57,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532db4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:39:57, skipping insertion in model container [2020-07-08 17:39:57,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:39:57" (3/3) ... [2020-07-08 17:39:57,362 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-07-08 17:39:57,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 17:39:57,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 17:39:57,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 17:39:57,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 17:39:57,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 17:39:57,422 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 17:39:57,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 17:39:57,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 17:39:57,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 17:39:57,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 17:39:57,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 17:39:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-08 17:39:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-08 17:39:57,451 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:39:57,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:39:57,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:39:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:39:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times [2020-07-08 17:39:57,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:39:57,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763522131] [2020-07-08 17:39:57,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:39:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:57,614 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-08 17:39:57,615 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {32#true} {32#true} #55#return; {32#true} is VALID [2020-07-08 17:39:57,617 INFO L263 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {32#true} is VALID [2020-07-08 17:39:57,618 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-08 17:39:57,618 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #55#return; {32#true} is VALID [2020-07-08 17:39:57,619 INFO L263 TraceCheckUtils]: 3: Hoare triple {32#true} call #t~ret2 := main(); {32#true} is VALID [2020-07-08 17:39:57,619 INFO L280 TraceCheckUtils]: 4: Hoare triple {32#true} havoc ~x~0; {32#true} is VALID [2020-07-08 17:39:57,619 INFO L280 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~y~0; {32#true} is VALID [2020-07-08 17:39:57,620 INFO L280 TraceCheckUtils]: 6: Hoare triple {32#true} ~x~0 := -50; {32#true} is VALID [2020-07-08 17:39:57,620 INFO L280 TraceCheckUtils]: 7: Hoare triple {32#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {32#true} is VALID [2020-07-08 17:39:57,621 INFO L280 TraceCheckUtils]: 8: Hoare triple {32#true} ~y~0 := #t~nondet0; {32#true} is VALID [2020-07-08 17:39:57,621 INFO L280 TraceCheckUtils]: 9: Hoare triple {32#true} havoc #t~nondet0; {32#true} is VALID [2020-07-08 17:39:57,621 INFO L280 TraceCheckUtils]: 10: Hoare triple {32#true} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {32#true} is VALID [2020-07-08 17:39:57,623 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#true} assume !true; {33#false} is VALID [2020-07-08 17:39:57,623 INFO L263 TraceCheckUtils]: 12: Hoare triple {33#false} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {33#false} is VALID [2020-07-08 17:39:57,623 INFO L280 TraceCheckUtils]: 13: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2020-07-08 17:39:57,624 INFO L280 TraceCheckUtils]: 14: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2020-07-08 17:39:57,624 INFO L280 TraceCheckUtils]: 15: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-08 17:39:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:39:57,626 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:39:57,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763522131] [2020-07-08 17:39:57,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:39:57,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 17:39:57,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766002146] [2020-07-08 17:39:57,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-08 17:39:57,645 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:39:57,649 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 17:39:57,721 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:57,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 17:39:57,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:39:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 17:39:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 17:39:57,734 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-08 17:39:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:57,847 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-07-08 17:39:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 17:39:57,848 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-08 17:39:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:39:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:39:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-08 17:39:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:39:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2020-07-08 17:39:57,879 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 45 transitions. [2020-07-08 17:39:57,992 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,012 INFO L225 Difference]: With dead ends: 41 [2020-07-08 17:39:58,012 INFO L226 Difference]: Without dead ends: 21 [2020-07-08 17:39:58,021 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 [2020-07-08 17:39:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-08 17:39:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-08 17:39:58,122 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:39:58,123 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-08 17:39:58,123 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-08 17:39:58,124 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-08 17:39:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:58,130 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-08 17:39:58,130 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-08 17:39:58,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:58,131 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:58,131 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-08 17:39:58,132 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-08 17:39:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:58,136 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-08 17:39:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-08 17:39:58,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:58,137 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:58,137 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:39:58,138 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:39:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-08 17:39:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-08 17:39:58,142 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-07-08 17:39:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:39:58,142 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-08 17:39:58,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 17:39:58,143 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states and 21 transitions. [2020-07-08 17:39:58,177 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-08 17:39:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-08 17:39:58,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:39:58,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:39:58,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 17:39:58,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:39:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:39:58,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times [2020-07-08 17:39:58,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:39:58,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246135378] [2020-07-08 17:39:58,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:39:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:58,246 INFO L280 TraceCheckUtils]: 0: Hoare triple {204#true} assume true; {204#true} is VALID [2020-07-08 17:39:58,247 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {204#true} {204#true} #55#return; {204#true} is VALID [2020-07-08 17:39:58,247 INFO L263 TraceCheckUtils]: 0: Hoare triple {204#true} call ULTIMATE.init(); {204#true} is VALID [2020-07-08 17:39:58,248 INFO L280 TraceCheckUtils]: 1: Hoare triple {204#true} assume true; {204#true} is VALID [2020-07-08 17:39:58,248 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {204#true} {204#true} #55#return; {204#true} is VALID [2020-07-08 17:39:58,248 INFO L263 TraceCheckUtils]: 3: Hoare triple {204#true} call #t~ret2 := main(); {204#true} is VALID [2020-07-08 17:39:58,249 INFO L280 TraceCheckUtils]: 4: Hoare triple {204#true} havoc ~x~0; {204#true} is VALID [2020-07-08 17:39:58,249 INFO L280 TraceCheckUtils]: 5: Hoare triple {204#true} havoc ~y~0; {204#true} is VALID [2020-07-08 17:39:58,250 INFO L280 TraceCheckUtils]: 6: Hoare triple {204#true} ~x~0 := -50; {208#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,252 INFO L280 TraceCheckUtils]: 7: Hoare triple {208#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {208#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,253 INFO L280 TraceCheckUtils]: 8: Hoare triple {208#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {208#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,254 INFO L280 TraceCheckUtils]: 9: Hoare triple {208#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {208#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,255 INFO L280 TraceCheckUtils]: 10: Hoare triple {208#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {208#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,257 INFO L280 TraceCheckUtils]: 11: Hoare triple {208#(<= (+ main_~x~0 50) 0)} assume !(~x~0 < 0); {205#false} is VALID [2020-07-08 17:39:58,258 INFO L263 TraceCheckUtils]: 12: Hoare triple {205#false} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {205#false} is VALID [2020-07-08 17:39:58,258 INFO L280 TraceCheckUtils]: 13: Hoare triple {205#false} ~cond := #in~cond; {205#false} is VALID [2020-07-08 17:39:58,258 INFO L280 TraceCheckUtils]: 14: Hoare triple {205#false} assume 0 == ~cond; {205#false} is VALID [2020-07-08 17:39:58,259 INFO L280 TraceCheckUtils]: 15: Hoare triple {205#false} assume !false; {205#false} is VALID [2020-07-08 17:39:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:39:58,261 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:39:58,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246135378] [2020-07-08 17:39:58,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:39:58,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-08 17:39:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854553528] [2020-07-08 17:39:58,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-08 17:39:58,264 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:39:58,264 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-08 17:39:58,290 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-08 17:39:58,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:39:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-08 17:39:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 17:39:58,292 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-07-08 17:39:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:58,369 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-08 17:39:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-08 17:39:58,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-08 17:39:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:39:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 17:39:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-07-08 17:39:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 17:39:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-07-08 17:39:58,375 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 28 transitions. [2020-07-08 17:39:58,435 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,437 INFO L225 Difference]: With dead ends: 28 [2020-07-08 17:39:58,437 INFO L226 Difference]: Without dead ends: 23 [2020-07-08 17:39:58,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 17:39:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-08 17:39:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-08 17:39:58,461 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:39:58,461 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 22 states. [2020-07-08 17:39:58,461 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 22 states. [2020-07-08 17:39:58,461 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 22 states. [2020-07-08 17:39:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:58,464 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-08 17:39:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-08 17:39:58,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:58,464 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:58,465 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 23 states. [2020-07-08 17:39:58,465 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 23 states. [2020-07-08 17:39:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:58,467 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-08 17:39:58,468 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-08 17:39:58,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:58,468 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:58,469 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:39:58,469 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:39:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-08 17:39:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-08 17:39:58,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-08 17:39:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:39:58,471 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-08 17:39:58,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-08 17:39:58,472 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 22 states and 22 transitions. [2020-07-08 17:39:58,502 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-08 17:39:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-08 17:39:58,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:39:58,504 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] [2020-07-08 17:39:58,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 17:39:58,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:39:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:39:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times [2020-07-08 17:39:58,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:39:58,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489780068] [2020-07-08 17:39:58,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:39:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:58,721 INFO L280 TraceCheckUtils]: 0: Hoare triple {357#true} assume true; {357#true} is VALID [2020-07-08 17:39:58,721 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {357#true} {357#true} #55#return; {357#true} is VALID [2020-07-08 17:39:58,722 INFO L263 TraceCheckUtils]: 0: Hoare triple {357#true} call ULTIMATE.init(); {357#true} is VALID [2020-07-08 17:39:58,722 INFO L280 TraceCheckUtils]: 1: Hoare triple {357#true} assume true; {357#true} is VALID [2020-07-08 17:39:58,722 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {357#true} {357#true} #55#return; {357#true} is VALID [2020-07-08 17:39:58,723 INFO L263 TraceCheckUtils]: 3: Hoare triple {357#true} call #t~ret2 := main(); {357#true} is VALID [2020-07-08 17:39:58,723 INFO L280 TraceCheckUtils]: 4: Hoare triple {357#true} havoc ~x~0; {357#true} is VALID [2020-07-08 17:39:58,723 INFO L280 TraceCheckUtils]: 5: Hoare triple {357#true} havoc ~y~0; {357#true} is VALID [2020-07-08 17:39:58,725 INFO L280 TraceCheckUtils]: 6: Hoare triple {357#true} ~x~0 := -50; {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,726 INFO L280 TraceCheckUtils]: 7: Hoare triple {361#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,726 INFO L280 TraceCheckUtils]: 8: Hoare triple {361#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,727 INFO L280 TraceCheckUtils]: 9: Hoare triple {361#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,728 INFO L280 TraceCheckUtils]: 10: Hoare triple {361#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,729 INFO L280 TraceCheckUtils]: 11: Hoare triple {361#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {361#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:58,731 INFO L280 TraceCheckUtils]: 12: Hoare triple {361#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {362#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:39:58,732 INFO L280 TraceCheckUtils]: 13: Hoare triple {362#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {363#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:39:58,733 INFO L280 TraceCheckUtils]: 14: Hoare triple {363#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {364#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:39:58,735 INFO L280 TraceCheckUtils]: 15: Hoare triple {364#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {364#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:39:58,736 INFO L280 TraceCheckUtils]: 16: Hoare triple {364#(<= (+ main_~x~0 51) main_~y~0)} assume !(~x~0 < 0); {365#(<= 51 main_~y~0)} is VALID [2020-07-08 17:39:58,737 INFO L263 TraceCheckUtils]: 17: Hoare triple {365#(<= 51 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {366#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:39:58,738 INFO L280 TraceCheckUtils]: 18: Hoare triple {366#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {367#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:39:58,739 INFO L280 TraceCheckUtils]: 19: Hoare triple {367#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {358#false} is VALID [2020-07-08 17:39:58,740 INFO L280 TraceCheckUtils]: 20: Hoare triple {358#false} assume !false; {358#false} is VALID [2020-07-08 17:39:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:39:58,742 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:39:58,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489780068] [2020-07-08 17:39:58,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:39:58,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-08 17:39:58,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751765084] [2020-07-08 17:39:58,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-08 17:39:58,744 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:39:58,744 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-08 17:39:58,772 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:58,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-08 17:39:58,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:39:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-08 17:39:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-08 17:39:58,773 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-07-08 17:39:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:59,113 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-07-08 17:39:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-08 17:39:59,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-08 17:39:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:39:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 17:39:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2020-07-08 17:39:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 17:39:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2020-07-08 17:39:59,122 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 33 transitions. [2020-07-08 17:39:59,174 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:59,179 INFO L225 Difference]: With dead ends: 33 [2020-07-08 17:39:59,179 INFO L226 Difference]: Without dead ends: 28 [2020-07-08 17:39:59,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-08 17:39:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-08 17:39:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-08 17:39:59,231 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:39:59,232 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 27 states. [2020-07-08 17:39:59,232 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 27 states. [2020-07-08 17:39:59,232 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 27 states. [2020-07-08 17:39:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:59,235 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-08 17:39:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-08 17:39:59,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:59,240 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:59,240 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 28 states. [2020-07-08 17:39:59,240 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 28 states. [2020-07-08 17:39:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:39:59,243 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-08 17:39:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-08 17:39:59,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:39:59,243 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:39:59,244 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:39:59,244 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:39:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-08 17:39:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-08 17:39:59,246 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-08 17:39:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:39:59,247 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-08 17:39:59,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-08 17:39:59,247 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 27 states and 27 transitions. [2020-07-08 17:39:59,283 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-08 17:39:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-08 17:39:59,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:39:59,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:39:59,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 17:39:59,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:39:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:39:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash -590441495, now seen corresponding path program 2 times [2020-07-08 17:39:59,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:39:59,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94538389] [2020-07-08 17:39:59,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:39:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:39:59,507 INFO L280 TraceCheckUtils]: 0: Hoare triple {554#true} assume true; {554#true} is VALID [2020-07-08 17:39:59,507 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {554#true} {554#true} #55#return; {554#true} is VALID [2020-07-08 17:39:59,508 INFO L263 TraceCheckUtils]: 0: Hoare triple {554#true} call ULTIMATE.init(); {554#true} is VALID [2020-07-08 17:39:59,508 INFO L280 TraceCheckUtils]: 1: Hoare triple {554#true} assume true; {554#true} is VALID [2020-07-08 17:39:59,511 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {554#true} {554#true} #55#return; {554#true} is VALID [2020-07-08 17:39:59,511 INFO L263 TraceCheckUtils]: 3: Hoare triple {554#true} call #t~ret2 := main(); {554#true} is VALID [2020-07-08 17:39:59,512 INFO L280 TraceCheckUtils]: 4: Hoare triple {554#true} havoc ~x~0; {554#true} is VALID [2020-07-08 17:39:59,518 INFO L280 TraceCheckUtils]: 5: Hoare triple {554#true} havoc ~y~0; {554#true} is VALID [2020-07-08 17:39:59,520 INFO L280 TraceCheckUtils]: 6: Hoare triple {554#true} ~x~0 := -50; {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,520 INFO L280 TraceCheckUtils]: 7: Hoare triple {558#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,521 INFO L280 TraceCheckUtils]: 8: Hoare triple {558#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,522 INFO L280 TraceCheckUtils]: 9: Hoare triple {558#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,523 INFO L280 TraceCheckUtils]: 10: Hoare triple {558#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,523 INFO L280 TraceCheckUtils]: 11: Hoare triple {558#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {558#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:39:59,525 INFO L280 TraceCheckUtils]: 12: Hoare triple {558#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {559#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:39:59,526 INFO L280 TraceCheckUtils]: 13: Hoare triple {559#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {560#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:39:59,527 INFO L280 TraceCheckUtils]: 14: Hoare triple {560#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {561#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:39:59,528 INFO L280 TraceCheckUtils]: 15: Hoare triple {561#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {561#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:39:59,529 INFO L280 TraceCheckUtils]: 16: Hoare triple {561#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {561#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:39:59,530 INFO L280 TraceCheckUtils]: 17: Hoare triple {561#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {562#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:39:59,531 INFO L280 TraceCheckUtils]: 18: Hoare triple {562#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {563#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:39:59,532 INFO L280 TraceCheckUtils]: 19: Hoare triple {563#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {564#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:39:59,533 INFO L280 TraceCheckUtils]: 20: Hoare triple {564#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {564#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:39:59,534 INFO L280 TraceCheckUtils]: 21: Hoare triple {564#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !(~x~0 < 0); {565#(<= 27 main_~y~0)} is VALID [2020-07-08 17:39:59,535 INFO L263 TraceCheckUtils]: 22: Hoare triple {565#(<= 27 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {566#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:39:59,536 INFO L280 TraceCheckUtils]: 23: Hoare triple {566#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {567#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:39:59,538 INFO L280 TraceCheckUtils]: 24: Hoare triple {567#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {555#false} is VALID [2020-07-08 17:39:59,538 INFO L280 TraceCheckUtils]: 25: Hoare triple {555#false} assume !false; {555#false} is VALID [2020-07-08 17:39:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:39:59,540 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:39:59,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94538389] [2020-07-08 17:39:59,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:39:59,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-08 17:39:59,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930344866] [2020-07-08 17:39:59,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-07-08 17:39:59,542 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:39:59,543 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-08 17:39:59,579 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:39:59,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-08 17:39:59,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:39:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-08 17:39:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-08 17:39:59,581 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2020-07-08 17:40:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:00,083 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-08 17:40:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-08 17:40:00,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-07-08 17:40:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-08 17:40:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 38 transitions. [2020-07-08 17:40:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-08 17:40:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 38 transitions. [2020-07-08 17:40:00,091 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 38 transitions. [2020-07-08 17:40:00,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:00,139 INFO L225 Difference]: With dead ends: 38 [2020-07-08 17:40:00,140 INFO L226 Difference]: Without dead ends: 33 [2020-07-08 17:40:00,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-07-08 17:40:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-08 17:40:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-08 17:40:00,195 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:00,196 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand 32 states. [2020-07-08 17:40:00,196 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 32 states. [2020-07-08 17:40:00,196 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 32 states. [2020-07-08 17:40:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:00,199 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-07-08 17:40:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-07-08 17:40:00,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:00,201 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:00,201 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 33 states. [2020-07-08 17:40:00,201 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 33 states. [2020-07-08 17:40:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:00,204 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-07-08 17:40:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-07-08 17:40:00,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:00,206 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:00,206 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:00,206 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-08 17:40:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-08 17:40:00,209 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-08 17:40:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:00,209 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-08 17:40:00,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-08 17:40:00,210 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 32 transitions. [2020-07-08 17:40:00,248 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-08 17:40:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-08 17:40:00,249 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:00,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:00,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 17:40:00,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash -934609001, now seen corresponding path program 3 times [2020-07-08 17:40:00,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:00,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859015748] [2020-07-08 17:40:00,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:00,536 INFO L280 TraceCheckUtils]: 0: Hoare triple {788#true} assume true; {788#true} is VALID [2020-07-08 17:40:00,536 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {788#true} {788#true} #55#return; {788#true} is VALID [2020-07-08 17:40:00,537 INFO L263 TraceCheckUtils]: 0: Hoare triple {788#true} call ULTIMATE.init(); {788#true} is VALID [2020-07-08 17:40:00,537 INFO L280 TraceCheckUtils]: 1: Hoare triple {788#true} assume true; {788#true} is VALID [2020-07-08 17:40:00,538 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {788#true} {788#true} #55#return; {788#true} is VALID [2020-07-08 17:40:00,538 INFO L263 TraceCheckUtils]: 3: Hoare triple {788#true} call #t~ret2 := main(); {788#true} is VALID [2020-07-08 17:40:00,538 INFO L280 TraceCheckUtils]: 4: Hoare triple {788#true} havoc ~x~0; {788#true} is VALID [2020-07-08 17:40:00,538 INFO L280 TraceCheckUtils]: 5: Hoare triple {788#true} havoc ~y~0; {788#true} is VALID [2020-07-08 17:40:00,539 INFO L280 TraceCheckUtils]: 6: Hoare triple {788#true} ~x~0 := -50; {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,540 INFO L280 TraceCheckUtils]: 7: Hoare triple {792#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,540 INFO L280 TraceCheckUtils]: 8: Hoare triple {792#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,541 INFO L280 TraceCheckUtils]: 9: Hoare triple {792#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,542 INFO L280 TraceCheckUtils]: 10: Hoare triple {792#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,544 INFO L280 TraceCheckUtils]: 11: Hoare triple {792#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {792#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:00,545 INFO L280 TraceCheckUtils]: 12: Hoare triple {792#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {793#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:00,546 INFO L280 TraceCheckUtils]: 13: Hoare triple {793#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {794#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:00,547 INFO L280 TraceCheckUtils]: 14: Hoare triple {794#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {795#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:00,550 INFO L280 TraceCheckUtils]: 15: Hoare triple {795#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {795#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:00,551 INFO L280 TraceCheckUtils]: 16: Hoare triple {795#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {795#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:00,553 INFO L280 TraceCheckUtils]: 17: Hoare triple {795#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {796#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:00,554 INFO L280 TraceCheckUtils]: 18: Hoare triple {796#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {797#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:00,555 INFO L280 TraceCheckUtils]: 19: Hoare triple {797#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:00,555 INFO L280 TraceCheckUtils]: 20: Hoare triple {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:00,556 INFO L280 TraceCheckUtils]: 21: Hoare triple {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:00,557 INFO L280 TraceCheckUtils]: 22: Hoare triple {798#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {799#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:00,557 INFO L280 TraceCheckUtils]: 23: Hoare triple {799#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {800#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:00,558 INFO L280 TraceCheckUtils]: 24: Hoare triple {800#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {801#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:00,558 INFO L280 TraceCheckUtils]: 25: Hoare triple {801#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {801#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:00,559 INFO L280 TraceCheckUtils]: 26: Hoare triple {801#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !(~x~0 < 0); {802#(<= 19 main_~y~0)} is VALID [2020-07-08 17:40:00,560 INFO L263 TraceCheckUtils]: 27: Hoare triple {802#(<= 19 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {803#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:00,561 INFO L280 TraceCheckUtils]: 28: Hoare triple {803#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {804#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:00,561 INFO L280 TraceCheckUtils]: 29: Hoare triple {804#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {789#false} is VALID [2020-07-08 17:40:00,561 INFO L280 TraceCheckUtils]: 30: Hoare triple {789#false} assume !false; {789#false} is VALID [2020-07-08 17:40:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:00,564 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:00,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859015748] [2020-07-08 17:40:00,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:00,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-08 17:40:00,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047062615] [2020-07-08 17:40:00,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-07-08 17:40:00,566 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:00,566 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states. [2020-07-08 17:40:00,603 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:00,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-08 17:40:00,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:00,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-08 17:40:00,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-08 17:40:00,605 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2020-07-08 17:40:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:01,390 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-07-08 17:40:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-08 17:40:01,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-07-08 17:40:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-08 17:40:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 43 transitions. [2020-07-08 17:40:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-08 17:40:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 43 transitions. [2020-07-08 17:40:01,398 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 43 transitions. [2020-07-08 17:40:01,449 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:01,450 INFO L225 Difference]: With dead ends: 43 [2020-07-08 17:40:01,451 INFO L226 Difference]: Without dead ends: 38 [2020-07-08 17:40:01,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-07-08 17:40:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-08 17:40:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-07-08 17:40:01,506 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:01,506 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand 37 states. [2020-07-08 17:40:01,506 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 37 states. [2020-07-08 17:40:01,506 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 37 states. [2020-07-08 17:40:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:01,509 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-08 17:40:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-07-08 17:40:01,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:01,509 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:01,510 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 38 states. [2020-07-08 17:40:01,510 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 38 states. [2020-07-08 17:40:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:01,512 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-08 17:40:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-07-08 17:40:01,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:01,513 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:01,513 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:01,513 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-08 17:40:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-07-08 17:40:01,515 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-07-08 17:40:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:01,515 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-07-08 17:40:01,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-08 17:40:01,515 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 37 states and 37 transitions. [2020-07-08 17:40:01,562 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-07-08 17:40:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-08 17:40:01,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:01,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:01,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-08 17:40:01,564 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:01,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1774497961, now seen corresponding path program 4 times [2020-07-08 17:40:01,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:01,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987009973] [2020-07-08 17:40:01,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:01,913 INFO L280 TraceCheckUtils]: 0: Hoare triple {1059#true} assume true; {1059#true} is VALID [2020-07-08 17:40:01,914 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1059#true} {1059#true} #55#return; {1059#true} is VALID [2020-07-08 17:40:01,914 INFO L263 TraceCheckUtils]: 0: Hoare triple {1059#true} call ULTIMATE.init(); {1059#true} is VALID [2020-07-08 17:40:01,917 INFO L280 TraceCheckUtils]: 1: Hoare triple {1059#true} assume true; {1059#true} is VALID [2020-07-08 17:40:01,918 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1059#true} {1059#true} #55#return; {1059#true} is VALID [2020-07-08 17:40:01,918 INFO L263 TraceCheckUtils]: 3: Hoare triple {1059#true} call #t~ret2 := main(); {1059#true} is VALID [2020-07-08 17:40:01,918 INFO L280 TraceCheckUtils]: 4: Hoare triple {1059#true} havoc ~x~0; {1059#true} is VALID [2020-07-08 17:40:01,919 INFO L280 TraceCheckUtils]: 5: Hoare triple {1059#true} havoc ~y~0; {1059#true} is VALID [2020-07-08 17:40:01,933 INFO L280 TraceCheckUtils]: 6: Hoare triple {1059#true} ~x~0 := -50; {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,937 INFO L280 TraceCheckUtils]: 7: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,937 INFO L280 TraceCheckUtils]: 8: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,938 INFO L280 TraceCheckUtils]: 9: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,939 INFO L280 TraceCheckUtils]: 10: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,939 INFO L280 TraceCheckUtils]: 11: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {1063#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:01,940 INFO L280 TraceCheckUtils]: 12: Hoare triple {1063#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {1064#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:01,941 INFO L280 TraceCheckUtils]: 13: Hoare triple {1064#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {1065#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:01,942 INFO L280 TraceCheckUtils]: 14: Hoare triple {1065#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {1066#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:01,942 INFO L280 TraceCheckUtils]: 15: Hoare triple {1066#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {1066#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:01,943 INFO L280 TraceCheckUtils]: 16: Hoare triple {1066#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {1066#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:01,944 INFO L280 TraceCheckUtils]: 17: Hoare triple {1066#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {1067#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:01,945 INFO L280 TraceCheckUtils]: 18: Hoare triple {1067#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {1068#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:01,946 INFO L280 TraceCheckUtils]: 19: Hoare triple {1068#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:01,947 INFO L280 TraceCheckUtils]: 20: Hoare triple {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:01,947 INFO L280 TraceCheckUtils]: 21: Hoare triple {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:01,949 INFO L280 TraceCheckUtils]: 22: Hoare triple {1069#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1070#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:01,951 INFO L280 TraceCheckUtils]: 23: Hoare triple {1070#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {1071#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:01,954 INFO L280 TraceCheckUtils]: 24: Hoare triple {1071#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:01,955 INFO L280 TraceCheckUtils]: 25: Hoare triple {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:01,957 INFO L280 TraceCheckUtils]: 26: Hoare triple {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:01,959 INFO L280 TraceCheckUtils]: 27: Hoare triple {1072#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1073#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:01,961 INFO L280 TraceCheckUtils]: 28: Hoare triple {1073#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {1074#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:01,963 INFO L280 TraceCheckUtils]: 29: Hoare triple {1074#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1075#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:01,964 INFO L280 TraceCheckUtils]: 30: Hoare triple {1075#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {1075#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:01,964 INFO L280 TraceCheckUtils]: 31: Hoare triple {1075#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !(~x~0 < 0); {1076#(<= 15 main_~y~0)} is VALID [2020-07-08 17:40:01,965 INFO L263 TraceCheckUtils]: 32: Hoare triple {1076#(<= 15 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {1077#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:01,966 INFO L280 TraceCheckUtils]: 33: Hoare triple {1077#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1078#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:01,967 INFO L280 TraceCheckUtils]: 34: Hoare triple {1078#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1060#false} is VALID [2020-07-08 17:40:01,967 INFO L280 TraceCheckUtils]: 35: Hoare triple {1060#false} assume !false; {1060#false} is VALID [2020-07-08 17:40:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:01,970 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:01,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987009973] [2020-07-08 17:40:01,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:01,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-08 17:40:01,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437528483] [2020-07-08 17:40:01,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-07-08 17:40:01,972 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:01,972 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states. [2020-07-08 17:40:02,013 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:02,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-08 17:40:02,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:02,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-08 17:40:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-07-08 17:40:02,015 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 18 states. [2020-07-08 17:40:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:03,131 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-07-08 17:40:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-08 17:40:03,131 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-07-08 17:40:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-08 17:40:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 48 transitions. [2020-07-08 17:40:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-08 17:40:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 48 transitions. [2020-07-08 17:40:03,138 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 22 states and 48 transitions. [2020-07-08 17:40:03,197 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:03,199 INFO L225 Difference]: With dead ends: 48 [2020-07-08 17:40:03,199 INFO L226 Difference]: Without dead ends: 43 [2020-07-08 17:40:03,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-07-08 17:40:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-08 17:40:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-08 17:40:03,240 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:03,240 INFO L82 GeneralOperation]: Start isEquivalent. First operand 43 states. Second operand 42 states. [2020-07-08 17:40:03,240 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 42 states. [2020-07-08 17:40:03,240 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 42 states. [2020-07-08 17:40:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:03,242 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-07-08 17:40:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-07-08 17:40:03,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:03,245 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:03,245 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 43 states. [2020-07-08 17:40:03,245 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 43 states. [2020-07-08 17:40:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:03,252 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-07-08 17:40:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-07-08 17:40:03,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:03,253 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:03,253 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:03,253 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-08 17:40:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-08 17:40:03,259 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-07-08 17:40:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:03,259 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-08 17:40:03,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-08 17:40:03,262 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 42 transitions. [2020-07-08 17:40:03,307 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-08 17:40:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-08 17:40:03,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:03,309 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:03,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-08 17:40:03,310 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash -194454825, now seen corresponding path program 5 times [2020-07-08 17:40:03,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:03,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451985995] [2020-07-08 17:40:03,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:03,759 INFO L280 TraceCheckUtils]: 0: Hoare triple {1367#true} assume true; {1367#true} is VALID [2020-07-08 17:40:03,760 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1367#true} {1367#true} #55#return; {1367#true} is VALID [2020-07-08 17:40:03,760 INFO L263 TraceCheckUtils]: 0: Hoare triple {1367#true} call ULTIMATE.init(); {1367#true} is VALID [2020-07-08 17:40:03,760 INFO L280 TraceCheckUtils]: 1: Hoare triple {1367#true} assume true; {1367#true} is VALID [2020-07-08 17:40:03,760 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1367#true} {1367#true} #55#return; {1367#true} is VALID [2020-07-08 17:40:03,761 INFO L263 TraceCheckUtils]: 3: Hoare triple {1367#true} call #t~ret2 := main(); {1367#true} is VALID [2020-07-08 17:40:03,761 INFO L280 TraceCheckUtils]: 4: Hoare triple {1367#true} havoc ~x~0; {1367#true} is VALID [2020-07-08 17:40:03,761 INFO L280 TraceCheckUtils]: 5: Hoare triple {1367#true} havoc ~y~0; {1367#true} is VALID [2020-07-08 17:40:03,762 INFO L280 TraceCheckUtils]: 6: Hoare triple {1367#true} ~x~0 := -50; {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,762 INFO L280 TraceCheckUtils]: 7: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,762 INFO L280 TraceCheckUtils]: 8: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,763 INFO L280 TraceCheckUtils]: 9: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,764 INFO L280 TraceCheckUtils]: 10: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,765 INFO L280 TraceCheckUtils]: 11: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {1371#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:03,766 INFO L280 TraceCheckUtils]: 12: Hoare triple {1371#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {1372#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:03,766 INFO L280 TraceCheckUtils]: 13: Hoare triple {1372#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {1373#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:03,767 INFO L280 TraceCheckUtils]: 14: Hoare triple {1373#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {1374#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:03,768 INFO L280 TraceCheckUtils]: 15: Hoare triple {1374#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {1374#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:03,768 INFO L280 TraceCheckUtils]: 16: Hoare triple {1374#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {1374#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:03,771 INFO L280 TraceCheckUtils]: 17: Hoare triple {1374#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {1375#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:03,771 INFO L280 TraceCheckUtils]: 18: Hoare triple {1375#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {1376#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:03,772 INFO L280 TraceCheckUtils]: 19: Hoare triple {1376#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:03,772 INFO L280 TraceCheckUtils]: 20: Hoare triple {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:03,773 INFO L280 TraceCheckUtils]: 21: Hoare triple {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:03,774 INFO L280 TraceCheckUtils]: 22: Hoare triple {1377#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1378#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:03,774 INFO L280 TraceCheckUtils]: 23: Hoare triple {1378#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {1379#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:03,775 INFO L280 TraceCheckUtils]: 24: Hoare triple {1379#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:03,775 INFO L280 TraceCheckUtils]: 25: Hoare triple {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:03,776 INFO L280 TraceCheckUtils]: 26: Hoare triple {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:03,777 INFO L280 TraceCheckUtils]: 27: Hoare triple {1380#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1381#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:03,777 INFO L280 TraceCheckUtils]: 28: Hoare triple {1381#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {1382#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:03,778 INFO L280 TraceCheckUtils]: 29: Hoare triple {1382#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:03,778 INFO L280 TraceCheckUtils]: 30: Hoare triple {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:03,779 INFO L280 TraceCheckUtils]: 31: Hoare triple {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:03,783 INFO L280 TraceCheckUtils]: 32: Hoare triple {1383#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1384#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:03,783 INFO L280 TraceCheckUtils]: 33: Hoare triple {1384#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {1385#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:03,784 INFO L280 TraceCheckUtils]: 34: Hoare triple {1385#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1386#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:03,785 INFO L280 TraceCheckUtils]: 35: Hoare triple {1386#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {1386#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:03,785 INFO L280 TraceCheckUtils]: 36: Hoare triple {1386#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !(~x~0 < 0); {1387#(<= 13 main_~y~0)} is VALID [2020-07-08 17:40:03,786 INFO L263 TraceCheckUtils]: 37: Hoare triple {1387#(<= 13 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {1388#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:03,787 INFO L280 TraceCheckUtils]: 38: Hoare triple {1388#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1389#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:03,787 INFO L280 TraceCheckUtils]: 39: Hoare triple {1389#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1368#false} is VALID [2020-07-08 17:40:03,787 INFO L280 TraceCheckUtils]: 40: Hoare triple {1368#false} assume !false; {1368#false} is VALID [2020-07-08 17:40:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:03,790 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:03,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451985995] [2020-07-08 17:40:03,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:03,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-08 17:40:03,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735597875] [2020-07-08 17:40:03,791 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-07-08 17:40:03,791 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:03,792 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states. [2020-07-08 17:40:03,848 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:03,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-08 17:40:03,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-08 17:40:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-07-08 17:40:03,850 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 21 states. [2020-07-08 17:40:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:05,340 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-08 17:40:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-08 17:40:05,341 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-07-08 17:40:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-08 17:40:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 53 transitions. [2020-07-08 17:40:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-08 17:40:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 53 transitions. [2020-07-08 17:40:05,346 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states and 53 transitions. [2020-07-08 17:40:05,418 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:05,419 INFO L225 Difference]: With dead ends: 53 [2020-07-08 17:40:05,419 INFO L226 Difference]: Without dead ends: 48 [2020-07-08 17:40:05,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-07-08 17:40:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-08 17:40:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-08 17:40:05,468 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:05,469 INFO L82 GeneralOperation]: Start isEquivalent. First operand 48 states. Second operand 47 states. [2020-07-08 17:40:05,469 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 47 states. [2020-07-08 17:40:05,469 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 47 states. [2020-07-08 17:40:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:05,472 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-07-08 17:40:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-07-08 17:40:05,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:05,473 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:05,473 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 48 states. [2020-07-08 17:40:05,473 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 48 states. [2020-07-08 17:40:05,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:05,475 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-07-08 17:40:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-07-08 17:40:05,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:05,476 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:05,476 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:05,476 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-08 17:40:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-08 17:40:05,478 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-07-08 17:40:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:05,479 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-08 17:40:05,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-08 17:40:05,479 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 47 states and 47 transitions. [2020-07-08 17:40:05,531 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-08 17:40:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-08 17:40:05,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:05,533 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:05,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-08 17:40:05,534 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487849, now seen corresponding path program 6 times [2020-07-08 17:40:05,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:05,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076001478] [2020-07-08 17:40:05,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:06,019 INFO L280 TraceCheckUtils]: 0: Hoare triple {1712#true} assume true; {1712#true} is VALID [2020-07-08 17:40:06,019 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {1712#true} {1712#true} #55#return; {1712#true} is VALID [2020-07-08 17:40:06,020 INFO L263 TraceCheckUtils]: 0: Hoare triple {1712#true} call ULTIMATE.init(); {1712#true} is VALID [2020-07-08 17:40:06,020 INFO L280 TraceCheckUtils]: 1: Hoare triple {1712#true} assume true; {1712#true} is VALID [2020-07-08 17:40:06,020 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1712#true} {1712#true} #55#return; {1712#true} is VALID [2020-07-08 17:40:06,021 INFO L263 TraceCheckUtils]: 3: Hoare triple {1712#true} call #t~ret2 := main(); {1712#true} is VALID [2020-07-08 17:40:06,021 INFO L280 TraceCheckUtils]: 4: Hoare triple {1712#true} havoc ~x~0; {1712#true} is VALID [2020-07-08 17:40:06,021 INFO L280 TraceCheckUtils]: 5: Hoare triple {1712#true} havoc ~y~0; {1712#true} is VALID [2020-07-08 17:40:06,025 INFO L280 TraceCheckUtils]: 6: Hoare triple {1712#true} ~x~0 := -50; {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,026 INFO L280 TraceCheckUtils]: 7: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,027 INFO L280 TraceCheckUtils]: 8: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,027 INFO L280 TraceCheckUtils]: 9: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,027 INFO L280 TraceCheckUtils]: 10: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,028 INFO L280 TraceCheckUtils]: 11: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {1716#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:06,029 INFO L280 TraceCheckUtils]: 12: Hoare triple {1716#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {1717#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:06,034 INFO L280 TraceCheckUtils]: 13: Hoare triple {1717#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {1718#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:06,035 INFO L280 TraceCheckUtils]: 14: Hoare triple {1718#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {1719#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:06,036 INFO L280 TraceCheckUtils]: 15: Hoare triple {1719#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {1719#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:06,036 INFO L280 TraceCheckUtils]: 16: Hoare triple {1719#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {1719#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:06,037 INFO L280 TraceCheckUtils]: 17: Hoare triple {1719#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {1720#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:06,038 INFO L280 TraceCheckUtils]: 18: Hoare triple {1720#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {1721#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:06,039 INFO L280 TraceCheckUtils]: 19: Hoare triple {1721#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:06,039 INFO L280 TraceCheckUtils]: 20: Hoare triple {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:06,040 INFO L280 TraceCheckUtils]: 21: Hoare triple {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:06,041 INFO L280 TraceCheckUtils]: 22: Hoare triple {1722#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1723#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:06,050 INFO L280 TraceCheckUtils]: 23: Hoare triple {1723#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {1724#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:06,051 INFO L280 TraceCheckUtils]: 24: Hoare triple {1724#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:06,052 INFO L280 TraceCheckUtils]: 25: Hoare triple {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:06,052 INFO L280 TraceCheckUtils]: 26: Hoare triple {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:06,053 INFO L280 TraceCheckUtils]: 27: Hoare triple {1725#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1726#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:06,054 INFO L280 TraceCheckUtils]: 28: Hoare triple {1726#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {1727#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:06,055 INFO L280 TraceCheckUtils]: 29: Hoare triple {1727#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:06,055 INFO L280 TraceCheckUtils]: 30: Hoare triple {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:06,056 INFO L280 TraceCheckUtils]: 31: Hoare triple {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:06,056 INFO L280 TraceCheckUtils]: 32: Hoare triple {1728#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1729#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:06,057 INFO L280 TraceCheckUtils]: 33: Hoare triple {1729#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {1730#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:06,058 INFO L280 TraceCheckUtils]: 34: Hoare triple {1730#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:06,058 INFO L280 TraceCheckUtils]: 35: Hoare triple {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:06,059 INFO L280 TraceCheckUtils]: 36: Hoare triple {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !!(~x~0 < 0); {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:06,060 INFO L280 TraceCheckUtils]: 37: Hoare triple {1731#(<= (+ main_~x~0 65) (* 5 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {1732#(<= (+ main_~x~0 65) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:06,060 INFO L280 TraceCheckUtils]: 38: Hoare triple {1732#(<= (+ main_~x~0 65) (* 6 main_~y~0))} #t~post1 := ~y~0; {1733#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} is VALID [2020-07-08 17:40:06,061 INFO L280 TraceCheckUtils]: 39: Hoare triple {1733#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {1734#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:06,069 INFO L280 TraceCheckUtils]: 40: Hoare triple {1734#(<= (+ main_~x~0 71) (* 6 main_~y~0))} havoc #t~post1; {1734#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:06,069 INFO L280 TraceCheckUtils]: 41: Hoare triple {1734#(<= (+ main_~x~0 71) (* 6 main_~y~0))} assume !(~x~0 < 0); {1735#(<= 12 main_~y~0)} is VALID [2020-07-08 17:40:06,070 INFO L263 TraceCheckUtils]: 42: Hoare triple {1735#(<= 12 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {1736#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:06,071 INFO L280 TraceCheckUtils]: 43: Hoare triple {1736#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {1737#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:06,072 INFO L280 TraceCheckUtils]: 44: Hoare triple {1737#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {1713#false} is VALID [2020-07-08 17:40:06,072 INFO L280 TraceCheckUtils]: 45: Hoare triple {1713#false} assume !false; {1713#false} is VALID [2020-07-08 17:40:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:06,077 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:06,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076001478] [2020-07-08 17:40:06,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:06,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-08 17:40:06,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122974791] [2020-07-08 17:40:06,078 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-07-08 17:40:06,079 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:06,079 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 24 states. [2020-07-08 17:40:06,127 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-08 17:40:06,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-08 17:40:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-07-08 17:40:06,129 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2020-07-08 17:40:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:07,931 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-07-08 17:40:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-08 17:40:07,932 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-07-08 17:40:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-08 17:40:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 58 transitions. [2020-07-08 17:40:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-08 17:40:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 58 transitions. [2020-07-08 17:40:07,939 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 31 states and 58 transitions. [2020-07-08 17:40:08,017 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:08,020 INFO L225 Difference]: With dead ends: 58 [2020-07-08 17:40:08,020 INFO L226 Difference]: Without dead ends: 53 [2020-07-08 17:40:08,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2020-07-08 17:40:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-08 17:40:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-07-08 17:40:08,076 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:08,076 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 52 states. [2020-07-08 17:40:08,077 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 52 states. [2020-07-08 17:40:08,077 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 52 states. [2020-07-08 17:40:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:08,079 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-08 17:40:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-07-08 17:40:08,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:08,080 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:08,080 INFO L74 IsIncluded]: Start isIncluded. First operand 52 states. Second operand 53 states. [2020-07-08 17:40:08,080 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 53 states. [2020-07-08 17:40:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:08,082 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-08 17:40:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-07-08 17:40:08,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:08,083 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:08,083 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:08,084 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-08 17:40:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-07-08 17:40:08,086 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-07-08 17:40:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:08,086 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-07-08 17:40:08,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-08 17:40:08,086 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 52 states and 52 transitions. [2020-07-08 17:40:08,151 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-07-08 17:40:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-08 17:40:08,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:08,152 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:08,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-08 17:40:08,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:08,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1046324759, now seen corresponding path program 7 times [2020-07-08 17:40:08,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:08,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936744251] [2020-07-08 17:40:08,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:08,762 INFO L280 TraceCheckUtils]: 0: Hoare triple {2096#true} assume true; {2096#true} is VALID [2020-07-08 17:40:08,763 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {2096#true} {2096#true} #55#return; {2096#true} is VALID [2020-07-08 17:40:08,763 INFO L263 TraceCheckUtils]: 0: Hoare triple {2096#true} call ULTIMATE.init(); {2096#true} is VALID [2020-07-08 17:40:08,763 INFO L280 TraceCheckUtils]: 1: Hoare triple {2096#true} assume true; {2096#true} is VALID [2020-07-08 17:40:08,764 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2096#true} {2096#true} #55#return; {2096#true} is VALID [2020-07-08 17:40:08,764 INFO L263 TraceCheckUtils]: 3: Hoare triple {2096#true} call #t~ret2 := main(); {2096#true} is VALID [2020-07-08 17:40:08,764 INFO L280 TraceCheckUtils]: 4: Hoare triple {2096#true} havoc ~x~0; {2096#true} is VALID [2020-07-08 17:40:08,765 INFO L280 TraceCheckUtils]: 5: Hoare triple {2096#true} havoc ~y~0; {2096#true} is VALID [2020-07-08 17:40:08,768 INFO L280 TraceCheckUtils]: 6: Hoare triple {2096#true} ~x~0 := -50; {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,768 INFO L280 TraceCheckUtils]: 7: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,769 INFO L280 TraceCheckUtils]: 8: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,770 INFO L280 TraceCheckUtils]: 9: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,771 INFO L280 TraceCheckUtils]: 10: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,771 INFO L280 TraceCheckUtils]: 11: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {2100#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:08,772 INFO L280 TraceCheckUtils]: 12: Hoare triple {2100#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {2101#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:08,773 INFO L280 TraceCheckUtils]: 13: Hoare triple {2101#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {2102#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:08,774 INFO L280 TraceCheckUtils]: 14: Hoare triple {2102#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {2103#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:08,774 INFO L280 TraceCheckUtils]: 15: Hoare triple {2103#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {2103#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:08,775 INFO L280 TraceCheckUtils]: 16: Hoare triple {2103#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {2103#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:08,775 INFO L280 TraceCheckUtils]: 17: Hoare triple {2103#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {2104#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:08,776 INFO L280 TraceCheckUtils]: 18: Hoare triple {2104#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {2105#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,777 INFO L280 TraceCheckUtils]: 19: Hoare triple {2105#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:08,778 INFO L280 TraceCheckUtils]: 20: Hoare triple {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:08,778 INFO L280 TraceCheckUtils]: 21: Hoare triple {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:08,779 INFO L280 TraceCheckUtils]: 22: Hoare triple {2106#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2107#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:08,780 INFO L280 TraceCheckUtils]: 23: Hoare triple {2107#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {2108#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,780 INFO L280 TraceCheckUtils]: 24: Hoare triple {2108#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:08,781 INFO L280 TraceCheckUtils]: 25: Hoare triple {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:08,781 INFO L280 TraceCheckUtils]: 26: Hoare triple {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:08,782 INFO L280 TraceCheckUtils]: 27: Hoare triple {2109#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2110#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:08,783 INFO L280 TraceCheckUtils]: 28: Hoare triple {2110#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {2111#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,784 INFO L280 TraceCheckUtils]: 29: Hoare triple {2111#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:08,785 INFO L280 TraceCheckUtils]: 30: Hoare triple {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:08,786 INFO L280 TraceCheckUtils]: 31: Hoare triple {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:08,790 INFO L280 TraceCheckUtils]: 32: Hoare triple {2112#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2113#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:08,794 INFO L280 TraceCheckUtils]: 33: Hoare triple {2113#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {2114#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,796 INFO L280 TraceCheckUtils]: 34: Hoare triple {2114#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:08,797 INFO L280 TraceCheckUtils]: 35: Hoare triple {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:08,797 INFO L280 TraceCheckUtils]: 36: Hoare triple {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !!(~x~0 < 0); {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:08,798 INFO L280 TraceCheckUtils]: 37: Hoare triple {2115#(<= (+ main_~x~0 65) (* 5 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2116#(<= (+ main_~x~0 65) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:08,799 INFO L280 TraceCheckUtils]: 38: Hoare triple {2116#(<= (+ main_~x~0 65) (* 6 main_~y~0))} #t~post1 := ~y~0; {2117#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,800 INFO L280 TraceCheckUtils]: 39: Hoare triple {2117#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:08,800 INFO L280 TraceCheckUtils]: 40: Hoare triple {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} havoc #t~post1; {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:08,800 INFO L280 TraceCheckUtils]: 41: Hoare triple {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} assume !!(~x~0 < 0); {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:08,801 INFO L280 TraceCheckUtils]: 42: Hoare triple {2118#(<= (+ main_~x~0 71) (* 6 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2119#(<= (+ main_~x~0 71) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:08,802 INFO L280 TraceCheckUtils]: 43: Hoare triple {2119#(<= (+ main_~x~0 71) (* 7 main_~y~0))} #t~post1 := ~y~0; {2120#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} is VALID [2020-07-08 17:40:08,803 INFO L280 TraceCheckUtils]: 44: Hoare triple {2120#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2121#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:08,803 INFO L280 TraceCheckUtils]: 45: Hoare triple {2121#(<= (+ main_~x~0 78) (* 7 main_~y~0))} havoc #t~post1; {2121#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:08,804 INFO L280 TraceCheckUtils]: 46: Hoare triple {2121#(<= (+ main_~x~0 78) (* 7 main_~y~0))} assume !(~x~0 < 0); {2122#(<= 12 main_~y~0)} is VALID [2020-07-08 17:40:08,805 INFO L263 TraceCheckUtils]: 47: Hoare triple {2122#(<= 12 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {2123#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:08,806 INFO L280 TraceCheckUtils]: 48: Hoare triple {2123#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {2124#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:08,807 INFO L280 TraceCheckUtils]: 49: Hoare triple {2124#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {2097#false} is VALID [2020-07-08 17:40:08,807 INFO L280 TraceCheckUtils]: 50: Hoare triple {2097#false} assume !false; {2097#false} is VALID [2020-07-08 17:40:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:08,812 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:08,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936744251] [2020-07-08 17:40:08,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:08,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-08 17:40:08,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358437803] [2020-07-08 17:40:08,813 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-07-08 17:40:08,813 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:08,813 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 27 states. [2020-07-08 17:40:08,878 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:08,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-08 17:40:08,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:08,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-08 17:40:08,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-07-08 17:40:08,880 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2020-07-08 17:40:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:11,092 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-08 17:40:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-08 17:40:11,092 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-07-08 17:40:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-08 17:40:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-07-08 17:40:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-08 17:40:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-07-08 17:40:11,097 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 36 states and 63 transitions. [2020-07-08 17:40:11,181 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:11,183 INFO L225 Difference]: With dead ends: 63 [2020-07-08 17:40:11,183 INFO L226 Difference]: Without dead ends: 58 [2020-07-08 17:40:11,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2020-07-08 17:40:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-08 17:40:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-08 17:40:11,241 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:11,241 INFO L82 GeneralOperation]: Start isEquivalent. First operand 58 states. Second operand 57 states. [2020-07-08 17:40:11,242 INFO L74 IsIncluded]: Start isIncluded. First operand 58 states. Second operand 57 states. [2020-07-08 17:40:11,242 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 57 states. [2020-07-08 17:40:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:11,244 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-07-08 17:40:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-07-08 17:40:11,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:11,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:11,245 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand 58 states. [2020-07-08 17:40:11,245 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 58 states. [2020-07-08 17:40:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:11,247 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-07-08 17:40:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-07-08 17:40:11,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:11,247 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:11,248 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:11,248 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-08 17:40:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-08 17:40:11,250 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-07-08 17:40:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:11,250 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-08 17:40:11,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-08 17:40:11,250 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 57 states and 57 transitions. [2020-07-08 17:40:11,311 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-08 17:40:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-08 17:40:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:11,313 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:11,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-08 17:40:11,313 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash 232135209, now seen corresponding path program 8 times [2020-07-08 17:40:11,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:11,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979481105] [2020-07-08 17:40:11,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:11,983 INFO L280 TraceCheckUtils]: 0: Hoare triple {2519#true} assume true; {2519#true} is VALID [2020-07-08 17:40:11,983 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {2519#true} {2519#true} #55#return; {2519#true} is VALID [2020-07-08 17:40:11,984 INFO L263 TraceCheckUtils]: 0: Hoare triple {2519#true} call ULTIMATE.init(); {2519#true} is VALID [2020-07-08 17:40:11,984 INFO L280 TraceCheckUtils]: 1: Hoare triple {2519#true} assume true; {2519#true} is VALID [2020-07-08 17:40:11,984 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2519#true} {2519#true} #55#return; {2519#true} is VALID [2020-07-08 17:40:11,984 INFO L263 TraceCheckUtils]: 3: Hoare triple {2519#true} call #t~ret2 := main(); {2519#true} is VALID [2020-07-08 17:40:11,985 INFO L280 TraceCheckUtils]: 4: Hoare triple {2519#true} havoc ~x~0; {2519#true} is VALID [2020-07-08 17:40:11,985 INFO L280 TraceCheckUtils]: 5: Hoare triple {2519#true} havoc ~y~0; {2519#true} is VALID [2020-07-08 17:40:11,992 INFO L280 TraceCheckUtils]: 6: Hoare triple {2519#true} ~x~0 := -50; {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:11,992 INFO L280 TraceCheckUtils]: 7: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:11,993 INFO L280 TraceCheckUtils]: 8: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:11,993 INFO L280 TraceCheckUtils]: 9: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:11,994 INFO L280 TraceCheckUtils]: 10: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:11,999 INFO L280 TraceCheckUtils]: 11: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {2523#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:12,000 INFO L280 TraceCheckUtils]: 12: Hoare triple {2523#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {2524#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:12,001 INFO L280 TraceCheckUtils]: 13: Hoare triple {2524#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {2525#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:12,002 INFO L280 TraceCheckUtils]: 14: Hoare triple {2525#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {2526#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:12,002 INFO L280 TraceCheckUtils]: 15: Hoare triple {2526#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {2526#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:12,003 INFO L280 TraceCheckUtils]: 16: Hoare triple {2526#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {2526#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:12,004 INFO L280 TraceCheckUtils]: 17: Hoare triple {2526#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {2527#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:12,004 INFO L280 TraceCheckUtils]: 18: Hoare triple {2527#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {2528#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,005 INFO L280 TraceCheckUtils]: 19: Hoare triple {2528#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:12,006 INFO L280 TraceCheckUtils]: 20: Hoare triple {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:12,006 INFO L280 TraceCheckUtils]: 21: Hoare triple {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:12,007 INFO L280 TraceCheckUtils]: 22: Hoare triple {2529#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2530#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:12,008 INFO L280 TraceCheckUtils]: 23: Hoare triple {2530#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {2531#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,009 INFO L280 TraceCheckUtils]: 24: Hoare triple {2531#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:12,009 INFO L280 TraceCheckUtils]: 25: Hoare triple {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:12,010 INFO L280 TraceCheckUtils]: 26: Hoare triple {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:12,011 INFO L280 TraceCheckUtils]: 27: Hoare triple {2532#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2533#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:12,011 INFO L280 TraceCheckUtils]: 28: Hoare triple {2533#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {2534#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,012 INFO L280 TraceCheckUtils]: 29: Hoare triple {2534#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:12,013 INFO L280 TraceCheckUtils]: 30: Hoare triple {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:12,013 INFO L280 TraceCheckUtils]: 31: Hoare triple {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:12,014 INFO L280 TraceCheckUtils]: 32: Hoare triple {2535#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2536#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:12,015 INFO L280 TraceCheckUtils]: 33: Hoare triple {2536#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {2537#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,016 INFO L280 TraceCheckUtils]: 34: Hoare triple {2537#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:12,016 INFO L280 TraceCheckUtils]: 35: Hoare triple {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:12,017 INFO L280 TraceCheckUtils]: 36: Hoare triple {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !!(~x~0 < 0); {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:12,018 INFO L280 TraceCheckUtils]: 37: Hoare triple {2538#(<= (+ main_~x~0 65) (* 5 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2539#(<= (+ main_~x~0 65) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:12,019 INFO L280 TraceCheckUtils]: 38: Hoare triple {2539#(<= (+ main_~x~0 65) (* 6 main_~y~0))} #t~post1 := ~y~0; {2540#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,019 INFO L280 TraceCheckUtils]: 39: Hoare triple {2540#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:12,020 INFO L280 TraceCheckUtils]: 40: Hoare triple {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} havoc #t~post1; {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:12,020 INFO L280 TraceCheckUtils]: 41: Hoare triple {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} assume !!(~x~0 < 0); {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:12,021 INFO L280 TraceCheckUtils]: 42: Hoare triple {2541#(<= (+ main_~x~0 71) (* 6 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2542#(<= (+ main_~x~0 71) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:12,022 INFO L280 TraceCheckUtils]: 43: Hoare triple {2542#(<= (+ main_~x~0 71) (* 7 main_~y~0))} #t~post1 := ~y~0; {2543#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,023 INFO L280 TraceCheckUtils]: 44: Hoare triple {2543#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:12,024 INFO L280 TraceCheckUtils]: 45: Hoare triple {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} havoc #t~post1; {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:12,024 INFO L280 TraceCheckUtils]: 46: Hoare triple {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} assume !!(~x~0 < 0); {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:12,025 INFO L280 TraceCheckUtils]: 47: Hoare triple {2544#(<= (+ main_~x~0 78) (* 7 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2545#(<= (+ main_~x~0 78) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:12,026 INFO L280 TraceCheckUtils]: 48: Hoare triple {2545#(<= (+ main_~x~0 78) (* 8 main_~y~0))} #t~post1 := ~y~0; {2546#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} is VALID [2020-07-08 17:40:12,027 INFO L280 TraceCheckUtils]: 49: Hoare triple {2546#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2547#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:12,027 INFO L280 TraceCheckUtils]: 50: Hoare triple {2547#(<= (+ main_~x~0 86) (* 8 main_~y~0))} havoc #t~post1; {2547#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:12,028 INFO L280 TraceCheckUtils]: 51: Hoare triple {2547#(<= (+ main_~x~0 86) (* 8 main_~y~0))} assume !(~x~0 < 0); {2548#(<= 11 main_~y~0)} is VALID [2020-07-08 17:40:12,029 INFO L263 TraceCheckUtils]: 52: Hoare triple {2548#(<= 11 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {2549#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:12,029 INFO L280 TraceCheckUtils]: 53: Hoare triple {2549#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {2550#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:12,030 INFO L280 TraceCheckUtils]: 54: Hoare triple {2550#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {2520#false} is VALID [2020-07-08 17:40:12,030 INFO L280 TraceCheckUtils]: 55: Hoare triple {2520#false} assume !false; {2520#false} is VALID [2020-07-08 17:40:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:12,036 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:12,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979481105] [2020-07-08 17:40:12,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:12,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-07-08 17:40:12,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920412931] [2020-07-08 17:40:12,038 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-07-08 17:40:12,038 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:12,038 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 30 states. [2020-07-08 17:40:12,097 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-08 17:40:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:12,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-08 17:40:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-07-08 17:40:12,099 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2020-07-08 17:40:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:15,011 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-08 17:40:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-08 17:40:15,012 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-07-08 17:40:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-08 17:40:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 68 transitions. [2020-07-08 17:40:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-08 17:40:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 68 transitions. [2020-07-08 17:40:15,016 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 41 states and 68 transitions. [2020-07-08 17:40:15,113 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:15,115 INFO L225 Difference]: With dead ends: 68 [2020-07-08 17:40:15,115 INFO L226 Difference]: Without dead ends: 63 [2020-07-08 17:40:15,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2020-07-08 17:40:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-08 17:40:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-07-08 17:40:15,195 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:15,195 INFO L82 GeneralOperation]: Start isEquivalent. First operand 63 states. Second operand 62 states. [2020-07-08 17:40:15,195 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 62 states. [2020-07-08 17:40:15,195 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 62 states. [2020-07-08 17:40:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:15,197 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-08 17:40:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-07-08 17:40:15,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:15,198 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:15,198 INFO L74 IsIncluded]: Start isIncluded. First operand 62 states. Second operand 63 states. [2020-07-08 17:40:15,198 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 63 states. [2020-07-08 17:40:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:15,200 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-08 17:40:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-07-08 17:40:15,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:15,201 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:15,201 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:15,201 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-08 17:40:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-07-08 17:40:15,203 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-07-08 17:40:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:15,203 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-07-08 17:40:15,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-08 17:40:15,203 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 62 states and 62 transitions. [2020-07-08 17:40:15,285 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-07-08 17:40:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-08 17:40:15,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:15,287 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:15,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-08 17:40:15,288 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:15,288 INFO L82 PathProgramCache]: Analyzing trace with hash 977101143, now seen corresponding path program 9 times [2020-07-08 17:40:15,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:15,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396701867] [2020-07-08 17:40:15,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:16,244 INFO L280 TraceCheckUtils]: 0: Hoare triple {2981#true} assume true; {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {2981#true} {2981#true} #55#return; {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L263 TraceCheckUtils]: 0: Hoare triple {2981#true} call ULTIMATE.init(); {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L280 TraceCheckUtils]: 1: Hoare triple {2981#true} assume true; {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2981#true} {2981#true} #55#return; {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L263 TraceCheckUtils]: 3: Hoare triple {2981#true} call #t~ret2 := main(); {2981#true} is VALID [2020-07-08 17:40:16,245 INFO L280 TraceCheckUtils]: 4: Hoare triple {2981#true} havoc ~x~0; {2981#true} is VALID [2020-07-08 17:40:16,246 INFO L280 TraceCheckUtils]: 5: Hoare triple {2981#true} havoc ~y~0; {2981#true} is VALID [2020-07-08 17:40:16,246 INFO L280 TraceCheckUtils]: 6: Hoare triple {2981#true} ~x~0 := -50; {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,247 INFO L280 TraceCheckUtils]: 7: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,247 INFO L280 TraceCheckUtils]: 8: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,247 INFO L280 TraceCheckUtils]: 9: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,248 INFO L280 TraceCheckUtils]: 10: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,248 INFO L280 TraceCheckUtils]: 11: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {2985#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:16,249 INFO L280 TraceCheckUtils]: 12: Hoare triple {2985#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {2986#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:16,250 INFO L280 TraceCheckUtils]: 13: Hoare triple {2986#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {2987#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:16,251 INFO L280 TraceCheckUtils]: 14: Hoare triple {2987#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {2988#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:16,251 INFO L280 TraceCheckUtils]: 15: Hoare triple {2988#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {2988#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:16,252 INFO L280 TraceCheckUtils]: 16: Hoare triple {2988#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {2988#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:16,255 INFO L280 TraceCheckUtils]: 17: Hoare triple {2988#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {2989#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:16,257 INFO L280 TraceCheckUtils]: 18: Hoare triple {2989#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {2990#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,258 INFO L280 TraceCheckUtils]: 19: Hoare triple {2990#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:16,262 INFO L280 TraceCheckUtils]: 20: Hoare triple {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:16,262 INFO L280 TraceCheckUtils]: 21: Hoare triple {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:16,266 INFO L280 TraceCheckUtils]: 22: Hoare triple {2991#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2992#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:16,267 INFO L280 TraceCheckUtils]: 23: Hoare triple {2992#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {2993#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,268 INFO L280 TraceCheckUtils]: 24: Hoare triple {2993#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:16,268 INFO L280 TraceCheckUtils]: 25: Hoare triple {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:16,269 INFO L280 TraceCheckUtils]: 26: Hoare triple {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:16,270 INFO L280 TraceCheckUtils]: 27: Hoare triple {2994#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2995#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:16,270 INFO L280 TraceCheckUtils]: 28: Hoare triple {2995#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {2996#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,271 INFO L280 TraceCheckUtils]: 29: Hoare triple {2996#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:16,272 INFO L280 TraceCheckUtils]: 30: Hoare triple {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:16,272 INFO L280 TraceCheckUtils]: 31: Hoare triple {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:16,273 INFO L280 TraceCheckUtils]: 32: Hoare triple {2997#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {2998#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:16,274 INFO L280 TraceCheckUtils]: 33: Hoare triple {2998#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {2999#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,274 INFO L280 TraceCheckUtils]: 34: Hoare triple {2999#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:16,275 INFO L280 TraceCheckUtils]: 35: Hoare triple {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:16,275 INFO L280 TraceCheckUtils]: 36: Hoare triple {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !!(~x~0 < 0); {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:16,276 INFO L280 TraceCheckUtils]: 37: Hoare triple {3000#(<= (+ main_~x~0 65) (* 5 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3001#(<= (+ main_~x~0 65) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:16,276 INFO L280 TraceCheckUtils]: 38: Hoare triple {3001#(<= (+ main_~x~0 65) (* 6 main_~y~0))} #t~post1 := ~y~0; {3002#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,277 INFO L280 TraceCheckUtils]: 39: Hoare triple {3002#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:16,278 INFO L280 TraceCheckUtils]: 40: Hoare triple {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} havoc #t~post1; {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:16,279 INFO L280 TraceCheckUtils]: 41: Hoare triple {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} assume !!(~x~0 < 0); {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:16,280 INFO L280 TraceCheckUtils]: 42: Hoare triple {3003#(<= (+ main_~x~0 71) (* 6 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3004#(<= (+ main_~x~0 71) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:16,281 INFO L280 TraceCheckUtils]: 43: Hoare triple {3004#(<= (+ main_~x~0 71) (* 7 main_~y~0))} #t~post1 := ~y~0; {3005#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,282 INFO L280 TraceCheckUtils]: 44: Hoare triple {3005#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:16,282 INFO L280 TraceCheckUtils]: 45: Hoare triple {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} havoc #t~post1; {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:16,286 INFO L280 TraceCheckUtils]: 46: Hoare triple {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} assume !!(~x~0 < 0); {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:16,287 INFO L280 TraceCheckUtils]: 47: Hoare triple {3006#(<= (+ main_~x~0 78) (* 7 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3007#(<= (+ main_~x~0 78) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:16,288 INFO L280 TraceCheckUtils]: 48: Hoare triple {3007#(<= (+ main_~x~0 78) (* 8 main_~y~0))} #t~post1 := ~y~0; {3008#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,289 INFO L280 TraceCheckUtils]: 49: Hoare triple {3008#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:16,290 INFO L280 TraceCheckUtils]: 50: Hoare triple {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} havoc #t~post1; {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:16,290 INFO L280 TraceCheckUtils]: 51: Hoare triple {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} assume !!(~x~0 < 0); {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:16,291 INFO L280 TraceCheckUtils]: 52: Hoare triple {3009#(<= (+ main_~x~0 86) (* 8 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3010#(<= (+ main_~x~0 86) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:16,292 INFO L280 TraceCheckUtils]: 53: Hoare triple {3010#(<= (+ main_~x~0 86) (* 9 main_~y~0))} #t~post1 := ~y~0; {3011#(<= (+ main_~x~0 86) (* 9 |main_#t~post1|))} is VALID [2020-07-08 17:40:16,293 INFO L280 TraceCheckUtils]: 54: Hoare triple {3011#(<= (+ main_~x~0 86) (* 9 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3012#(<= (+ main_~x~0 95) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:16,293 INFO L280 TraceCheckUtils]: 55: Hoare triple {3012#(<= (+ main_~x~0 95) (* 9 main_~y~0))} havoc #t~post1; {3012#(<= (+ main_~x~0 95) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:16,294 INFO L280 TraceCheckUtils]: 56: Hoare triple {3012#(<= (+ main_~x~0 95) (* 9 main_~y~0))} assume !(~x~0 < 0); {3013#(<= 11 main_~y~0)} is VALID [2020-07-08 17:40:16,295 INFO L263 TraceCheckUtils]: 57: Hoare triple {3013#(<= 11 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {3014#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:16,295 INFO L280 TraceCheckUtils]: 58: Hoare triple {3014#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {3015#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:16,296 INFO L280 TraceCheckUtils]: 59: Hoare triple {3015#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {2982#false} is VALID [2020-07-08 17:40:16,296 INFO L280 TraceCheckUtils]: 60: Hoare triple {2982#false} assume !false; {2982#false} is VALID [2020-07-08 17:40:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:16,301 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:16,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396701867] [2020-07-08 17:40:16,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:16,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-08 17:40:16,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522902550] [2020-07-08 17:40:16,302 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-07-08 17:40:16,303 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:16,303 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states. [2020-07-08 17:40:16,386 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:16,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-08 17:40:16,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:16,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-08 17:40:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2020-07-08 17:40:16,388 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 33 states. [2020-07-08 17:40:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:20,110 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-07-08 17:40:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-08 17:40:20,110 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-07-08 17:40:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-08 17:40:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 73 transitions. [2020-07-08 17:40:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-08 17:40:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 73 transitions. [2020-07-08 17:40:20,115 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 46 states and 73 transitions. [2020-07-08 17:40:20,215 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 73 edges. 73 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:20,217 INFO L225 Difference]: With dead ends: 73 [2020-07-08 17:40:20,217 INFO L226 Difference]: Without dead ends: 68 [2020-07-08 17:40:20,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=194, Invalid=2998, Unknown=0, NotChecked=0, Total=3192 [2020-07-08 17:40:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-08 17:40:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-08 17:40:20,292 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:20,292 INFO L82 GeneralOperation]: Start isEquivalent. First operand 68 states. Second operand 67 states. [2020-07-08 17:40:20,292 INFO L74 IsIncluded]: Start isIncluded. First operand 68 states. Second operand 67 states. [2020-07-08 17:40:20,292 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 67 states. [2020-07-08 17:40:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:20,294 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-08 17:40:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-07-08 17:40:20,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:20,295 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:20,295 INFO L74 IsIncluded]: Start isIncluded. First operand 67 states. Second operand 68 states. [2020-07-08 17:40:20,295 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 68 states. [2020-07-08 17:40:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:20,297 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-08 17:40:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-07-08 17:40:20,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:20,298 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:20,298 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:20,298 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-08 17:40:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-08 17:40:20,300 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2020-07-08 17:40:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:20,300 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-08 17:40:20,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-08 17:40:20,300 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 67 states and 67 transitions. [2020-07-08 17:40:20,401 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-08 17:40:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-08 17:40:20,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:40:20,402 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:40:20,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-08 17:40:20,403 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:40:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:40:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash 751396585, now seen corresponding path program 10 times [2020-07-08 17:40:20,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:40:20,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852037079] [2020-07-08 17:40:20,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:40:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:40:21,439 INFO L280 TraceCheckUtils]: 0: Hoare triple {3482#true} assume true; {3482#true} is VALID [2020-07-08 17:40:21,440 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {3482#true} {3482#true} #55#return; {3482#true} is VALID [2020-07-08 17:40:21,440 INFO L263 TraceCheckUtils]: 0: Hoare triple {3482#true} call ULTIMATE.init(); {3482#true} is VALID [2020-07-08 17:40:21,440 INFO L280 TraceCheckUtils]: 1: Hoare triple {3482#true} assume true; {3482#true} is VALID [2020-07-08 17:40:21,440 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3482#true} {3482#true} #55#return; {3482#true} is VALID [2020-07-08 17:40:21,441 INFO L263 TraceCheckUtils]: 3: Hoare triple {3482#true} call #t~ret2 := main(); {3482#true} is VALID [2020-07-08 17:40:21,441 INFO L280 TraceCheckUtils]: 4: Hoare triple {3482#true} havoc ~x~0; {3482#true} is VALID [2020-07-08 17:40:21,441 INFO L280 TraceCheckUtils]: 5: Hoare triple {3482#true} havoc ~y~0; {3482#true} is VALID [2020-07-08 17:40:21,441 INFO L280 TraceCheckUtils]: 6: Hoare triple {3482#true} ~x~0 := -50; {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,442 INFO L280 TraceCheckUtils]: 7: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,443 INFO L280 TraceCheckUtils]: 8: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} ~y~0 := #t~nondet0; {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,443 INFO L280 TraceCheckUtils]: 9: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} havoc #t~nondet0; {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,444 INFO L280 TraceCheckUtils]: 10: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} assume !!(-1000 < ~y~0 && ~y~0 < 1000000); {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,444 INFO L280 TraceCheckUtils]: 11: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} assume !!(~x~0 < 0); {3486#(<= (+ main_~x~0 50) 0)} is VALID [2020-07-08 17:40:21,445 INFO L280 TraceCheckUtils]: 12: Hoare triple {3486#(<= (+ main_~x~0 50) 0)} ~x~0 := ~x~0 + ~y~0; {3487#(<= (+ main_~x~0 50) main_~y~0)} is VALID [2020-07-08 17:40:21,446 INFO L280 TraceCheckUtils]: 13: Hoare triple {3487#(<= (+ main_~x~0 50) main_~y~0)} #t~post1 := ~y~0; {3488#(<= (+ main_~x~0 50) |main_#t~post1|)} is VALID [2020-07-08 17:40:21,447 INFO L280 TraceCheckUtils]: 14: Hoare triple {3488#(<= (+ main_~x~0 50) |main_#t~post1|)} ~y~0 := 1 + #t~post1; {3489#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:21,448 INFO L280 TraceCheckUtils]: 15: Hoare triple {3489#(<= (+ main_~x~0 51) main_~y~0)} havoc #t~post1; {3489#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:21,448 INFO L280 TraceCheckUtils]: 16: Hoare triple {3489#(<= (+ main_~x~0 51) main_~y~0)} assume !!(~x~0 < 0); {3489#(<= (+ main_~x~0 51) main_~y~0)} is VALID [2020-07-08 17:40:21,449 INFO L280 TraceCheckUtils]: 17: Hoare triple {3489#(<= (+ main_~x~0 51) main_~y~0)} ~x~0 := ~x~0 + ~y~0; {3490#(<= (+ main_~x~0 51) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:21,450 INFO L280 TraceCheckUtils]: 18: Hoare triple {3490#(<= (+ main_~x~0 51) (* 2 main_~y~0))} #t~post1 := ~y~0; {3491#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,450 INFO L280 TraceCheckUtils]: 19: Hoare triple {3491#(<= (+ main_~x~0 51) (* 2 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:21,451 INFO L280 TraceCheckUtils]: 20: Hoare triple {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} havoc #t~post1; {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:21,451 INFO L280 TraceCheckUtils]: 21: Hoare triple {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} assume !!(~x~0 < 0); {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} is VALID [2020-07-08 17:40:21,452 INFO L280 TraceCheckUtils]: 22: Hoare triple {3492#(<= (+ main_~x~0 53) (* 2 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3493#(<= (+ main_~x~0 53) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:21,452 INFO L280 TraceCheckUtils]: 23: Hoare triple {3493#(<= (+ main_~x~0 53) (* 3 main_~y~0))} #t~post1 := ~y~0; {3494#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,453 INFO L280 TraceCheckUtils]: 24: Hoare triple {3494#(<= (+ main_~x~0 53) (* 3 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:21,453 INFO L280 TraceCheckUtils]: 25: Hoare triple {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} havoc #t~post1; {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:21,454 INFO L280 TraceCheckUtils]: 26: Hoare triple {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} assume !!(~x~0 < 0); {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} is VALID [2020-07-08 17:40:21,455 INFO L280 TraceCheckUtils]: 27: Hoare triple {3495#(<= (+ main_~x~0 56) (* 3 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3496#(<= (+ main_~x~0 56) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:21,456 INFO L280 TraceCheckUtils]: 28: Hoare triple {3496#(<= (+ main_~x~0 56) (* 4 main_~y~0))} #t~post1 := ~y~0; {3497#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,457 INFO L280 TraceCheckUtils]: 29: Hoare triple {3497#(<= (+ main_~x~0 56) (* 4 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:21,458 INFO L280 TraceCheckUtils]: 30: Hoare triple {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} havoc #t~post1; {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:21,458 INFO L280 TraceCheckUtils]: 31: Hoare triple {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} assume !!(~x~0 < 0); {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} is VALID [2020-07-08 17:40:21,459 INFO L280 TraceCheckUtils]: 32: Hoare triple {3498#(<= (+ main_~x~0 60) (* 4 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3499#(<= (+ main_~x~0 60) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:21,460 INFO L280 TraceCheckUtils]: 33: Hoare triple {3499#(<= (+ main_~x~0 60) (* 5 main_~y~0))} #t~post1 := ~y~0; {3500#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,461 INFO L280 TraceCheckUtils]: 34: Hoare triple {3500#(<= (+ main_~x~0 60) (* 5 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:21,462 INFO L280 TraceCheckUtils]: 35: Hoare triple {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} havoc #t~post1; {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:21,462 INFO L280 TraceCheckUtils]: 36: Hoare triple {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} assume !!(~x~0 < 0); {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} is VALID [2020-07-08 17:40:21,463 INFO L280 TraceCheckUtils]: 37: Hoare triple {3501#(<= (+ main_~x~0 65) (* 5 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3502#(<= (+ main_~x~0 65) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:21,464 INFO L280 TraceCheckUtils]: 38: Hoare triple {3502#(<= (+ main_~x~0 65) (* 6 main_~y~0))} #t~post1 := ~y~0; {3503#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,464 INFO L280 TraceCheckUtils]: 39: Hoare triple {3503#(<= (+ main_~x~0 65) (* 6 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:21,465 INFO L280 TraceCheckUtils]: 40: Hoare triple {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} havoc #t~post1; {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:21,465 INFO L280 TraceCheckUtils]: 41: Hoare triple {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} assume !!(~x~0 < 0); {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} is VALID [2020-07-08 17:40:21,466 INFO L280 TraceCheckUtils]: 42: Hoare triple {3504#(<= (+ main_~x~0 71) (* 6 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3505#(<= (+ main_~x~0 71) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:21,466 INFO L280 TraceCheckUtils]: 43: Hoare triple {3505#(<= (+ main_~x~0 71) (* 7 main_~y~0))} #t~post1 := ~y~0; {3506#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,467 INFO L280 TraceCheckUtils]: 44: Hoare triple {3506#(<= (+ main_~x~0 71) (* 7 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:21,467 INFO L280 TraceCheckUtils]: 45: Hoare triple {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} havoc #t~post1; {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:21,468 INFO L280 TraceCheckUtils]: 46: Hoare triple {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} assume !!(~x~0 < 0); {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} is VALID [2020-07-08 17:40:21,468 INFO L280 TraceCheckUtils]: 47: Hoare triple {3507#(<= (+ main_~x~0 78) (* 7 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3508#(<= (+ main_~x~0 78) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:21,469 INFO L280 TraceCheckUtils]: 48: Hoare triple {3508#(<= (+ main_~x~0 78) (* 8 main_~y~0))} #t~post1 := ~y~0; {3509#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,470 INFO L280 TraceCheckUtils]: 49: Hoare triple {3509#(<= (+ main_~x~0 78) (* 8 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:21,471 INFO L280 TraceCheckUtils]: 50: Hoare triple {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} havoc #t~post1; {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:21,471 INFO L280 TraceCheckUtils]: 51: Hoare triple {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} assume !!(~x~0 < 0); {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} is VALID [2020-07-08 17:40:21,472 INFO L280 TraceCheckUtils]: 52: Hoare triple {3510#(<= (+ main_~x~0 86) (* 8 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3511#(<= (+ main_~x~0 86) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:21,473 INFO L280 TraceCheckUtils]: 53: Hoare triple {3511#(<= (+ main_~x~0 86) (* 9 main_~y~0))} #t~post1 := ~y~0; {3512#(<= (+ main_~x~0 86) (* 9 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,474 INFO L280 TraceCheckUtils]: 54: Hoare triple {3512#(<= (+ main_~x~0 86) (* 9 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:21,474 INFO L280 TraceCheckUtils]: 55: Hoare triple {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} havoc #t~post1; {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:21,475 INFO L280 TraceCheckUtils]: 56: Hoare triple {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} assume !!(~x~0 < 0); {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} is VALID [2020-07-08 17:40:21,476 INFO L280 TraceCheckUtils]: 57: Hoare triple {3513#(<= (+ main_~x~0 95) (* 9 main_~y~0))} ~x~0 := ~x~0 + ~y~0; {3514#(<= (+ main_~x~0 95) (* 10 main_~y~0))} is VALID [2020-07-08 17:40:21,477 INFO L280 TraceCheckUtils]: 58: Hoare triple {3514#(<= (+ main_~x~0 95) (* 10 main_~y~0))} #t~post1 := ~y~0; {3515#(<= (+ main_~x~0 95) (* 10 |main_#t~post1|))} is VALID [2020-07-08 17:40:21,478 INFO L280 TraceCheckUtils]: 59: Hoare triple {3515#(<= (+ main_~x~0 95) (* 10 |main_#t~post1|))} ~y~0 := 1 + #t~post1; {3516#(<= (+ main_~x~0 105) (* 10 main_~y~0))} is VALID [2020-07-08 17:40:21,479 INFO L280 TraceCheckUtils]: 60: Hoare triple {3516#(<= (+ main_~x~0 105) (* 10 main_~y~0))} havoc #t~post1; {3516#(<= (+ main_~x~0 105) (* 10 main_~y~0))} is VALID [2020-07-08 17:40:21,480 INFO L280 TraceCheckUtils]: 61: Hoare triple {3516#(<= (+ main_~x~0 105) (* 10 main_~y~0))} assume !(~x~0 < 0); {3517#(<= 11 main_~y~0)} is VALID [2020-07-08 17:40:21,481 INFO L263 TraceCheckUtils]: 62: Hoare triple {3517#(<= 11 main_~y~0)} call __VERIFIER_assert((if ~y~0 > 0 then 1 else 0)); {3518#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:40:21,482 INFO L280 TraceCheckUtils]: 63: Hoare triple {3518#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {3519#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:40:21,482 INFO L280 TraceCheckUtils]: 64: Hoare triple {3519#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {3483#false} is VALID [2020-07-08 17:40:21,483 INFO L280 TraceCheckUtils]: 65: Hoare triple {3483#false} assume !false; {3483#false} is VALID [2020-07-08 17:40:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:40:21,489 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:40:21,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852037079] [2020-07-08 17:40:21,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:40:21,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-07-08 17:40:21,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636624647] [2020-07-08 17:40:21,490 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-07-08 17:40:21,490 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:40:21,490 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 36 states. [2020-07-08 17:40:21,582 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:21,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-08 17:40:21,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:40:21,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-08 17:40:21,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2020-07-08 17:40:21,584 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 36 states. [2020-07-08 17:40:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:25,786 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-08 17:40:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-08 17:40:25,787 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-07-08 17:40:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:40:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-08 17:40:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2020-07-08 17:40:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-08 17:40:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2020-07-08 17:40:25,791 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 51 states and 68 transitions. [2020-07-08 17:40:25,905 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:25,905 INFO L225 Difference]: With dead ends: 68 [2020-07-08 17:40:25,905 INFO L226 Difference]: Without dead ends: 0 [2020-07-08 17:40:25,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=3685, Unknown=0, NotChecked=0, Total=3906 [2020-07-08 17:40:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-08 17:40:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-08 17:40:25,908 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:40:25,908 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-08 17:40:25,909 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 17:40:25,909 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 17:40:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:25,909 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 17:40:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:40:25,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:25,909 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:25,909 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-08 17:40:25,909 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-08 17:40:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:40:25,910 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-08 17:40:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:40:25,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:25,910 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:40:25,910 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:40:25,910 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:40:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-08 17:40:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-08 17:40:25,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-08 17:40:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:40:25,911 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-08 17:40:25,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-08 17:40:25,911 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-08 17:40:25,911 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:40:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-08 17:40:25,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:40:25,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-08 17:40:25,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-08 17:40:26,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,608 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,608 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-08 17:40:26,608 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-08 17:40:26,608 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-08 17:40:26,608 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-08 17:40:26,608 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-08 17:40:26,609 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-08 17:40:26,609 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 24) the Hoare annotation is: true [2020-07-08 17:40:26,609 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse2 (+ main_~x~0 65)) (.cse1 (* 6 main_~y~0))) (let ((.cse0 (<= .cse2 .cse1))) (or (and .cse0 (<= (+ main_~x~0 86) (* 8 main_~y~0))) (<= (+ main_~x~0 71) .cse1) (<= (+ main_~x~0 50) 0) (<= .cse2 (* 5 main_~y~0)) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 51) main_~y~0) (and (<= (+ main_~x~0 95) (* 9 main_~y~0)) .cse0)))) [2020-07-08 17:40:26,609 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-08 17:40:26,610 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-08 17:40:26,610 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-08 17:40:26,610 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 24) the Hoare annotation is: true [2020-07-08 17:40:26,610 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2020-07-08 17:40:26,610 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-08 17:40:26,610 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (<= (+ main_~x~0 50) main_~y~0) (<= (+ main_~x~0 78) (* 8 main_~y~0)) (<= (+ main_~x~0 56) (* 4 main_~y~0)) (<= (+ main_~x~0 51) (* 2 main_~y~0)) (<= (+ main_~x~0 65) (* 6 main_~y~0)) (<= (+ main_~x~0 95) (* 10 main_~y~0))) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 50))) (and (<= .cse0 main_~y~0) (<= .cse0 |main_#t~post1|))) (let ((.cse1 (+ main_~x~0 95))) (and (<= .cse1 (* 10 |main_#t~post1|)) (<= .cse1 (* 10 main_~y~0)))) (let ((.cse2 (+ main_~x~0 60))) (and (<= .cse2 (* 5 main_~y~0)) (<= .cse2 (* 5 |main_#t~post1|)))) (let ((.cse3 (+ main_~x~0 53))) (and (<= .cse3 (* 3 main_~y~0)) (<= .cse3 (* 3 |main_#t~post1|)))) (let ((.cse4 (+ main_~x~0 78))) (and (<= .cse4 (* 8 |main_#t~post1|)) (<= .cse4 (* 8 main_~y~0)))) (let ((.cse5 (+ main_~x~0 71))) (and (<= .cse5 (* 7 main_~y~0)) (<= .cse5 (* 7 |main_#t~post1|))))) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 51))) (or (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 10 |main_#t~post1|))) (and (<= (+ main_~x~0 50) |main_#t~post1|) (<= .cse0 main_~y~0)) (and (<= (+ main_~x~0 60) (* 4 main_~y~0)) (<= (+ main_~x~0 56) (* 4 |main_#t~post1|))) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 2 |main_#t~post1|))) (and (<= (+ main_~x~0 71) (* 6 main_~y~0)) (<= (+ main_~x~0 65) (* 6 |main_#t~post1|))) (and (<= (+ main_~x~0 78) (* 8 |main_#t~post1|)) (<= (+ main_~x~0 86) (* 8 main_~y~0))))) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 78) (* 7 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 65) (* 5 main_~y~0)) (<= (+ main_~x~0 86) (* 8 main_~y~0)) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 51) main_~y~0)) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= 11 main_~y~0)) [2020-07-08 17:40:26,611 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-08 17:40:26,611 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-08 17:40:26,612 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-08 17:40:26,612 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-07-08 17:40:26,612 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 17:40:26,612 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-08 17:40:26,612 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-07-08 17:40:26,612 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-08 17:40:26,616 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 17:40:26,617 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 17:40:26,617 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 17:40:26,619 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-08 17:40:26,619 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-08 17:40:26,637 INFO L163 areAnnotationChecker]: CFG has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 17:40:26,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 05:40:26 BoogieIcfgContainer [2020-07-08 17:40:26,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 17:40:26,657 INFO L168 Benchmark]: Toolchain (without parser) took 30197.43 ms. Allocated memory was 138.9 MB in the beginning and 392.2 MB in the end (delta: 253.2 MB). Free memory was 104.0 MB in the beginning and 356.3 MB in the end (delta: -252.3 MB). Peak memory consumption was 896.4 kB. Max. memory is 7.1 GB. [2020-07-08 17:40:26,657 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-08 17:40:26,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.72 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:26,659 INFO L168 Benchmark]: Boogie Preprocessor took 118.27 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 94.1 MB in the beginning and 184.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:26,660 INFO L168 Benchmark]: RCFGBuilder took 460.11 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 165.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-08 17:40:26,661 INFO L168 Benchmark]: TraceAbstraction took 29306.22 ms. Allocated memory was 203.9 MB in the beginning and 392.2 MB in the end (delta: 188.2 MB). Free memory was 164.3 MB in the beginning and 356.3 MB in the end (delta: -192.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 17:40:26,664 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.72 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.27 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 94.1 MB in the beginning and 184.1 MB in the end (delta: -90.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.11 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 165.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29306.22 ms. Allocated memory was 203.9 MB in the beginning and 392.2 MB in the end (delta: 188.2 MB). Free memory was 164.3 MB in the beginning and 356.3 MB in the end (delta: -192.0 MB). There was no memory consumed. 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: 18]: Loop Invariant Derived loop invariant: (((((x + 105 <= 10 * y || x + 78 <= 7 * y) || x + 50 <= 0) || x + 65 <= 5 * y) || x + 86 <= 8 * y) || x + 56 <= 3 * y) || x + 51 <= y - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.4s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 204 SDslu, 2210 SDs, 0 SdLazy, 5571 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 95 PreInvPairs, 179 NumberOfFragments, 384 HoareAnnotationTreeSize, 95 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 29 FomulaSimplificationsInter, 331 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...