/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:16,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:16,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:16,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:16,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:16,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:16,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:16,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:16,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:16,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:16,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:16,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:16,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:16,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:16,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:16,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:16,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:16,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:16,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:16,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:16,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:16,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:16,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:16,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:16,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:16,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:16,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:16,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:50:16,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:16,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:16,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:16,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:16,185 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:16,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:16,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:16,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:16,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:16,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:16,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:16,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:16,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:16,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:16,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:16,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:16,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:16,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:16,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:16,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:16,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:16,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:16,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:16,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:16,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:16,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:16,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:16,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:16,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:16,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:16,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:16,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:16,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:16,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:16,519 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:16,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-07-17 22:50:16,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8366acb7/3151cd22319f4c40a9ae1399dfd3fadb/FLAGce6ab4674 [2020-07-17 22:50:17,167 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:17,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-07-17 22:50:17,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8366acb7/3151cd22319f4c40a9ae1399dfd3fadb/FLAGce6ab4674 [2020-07-17 22:50:17,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8366acb7/3151cd22319f4c40a9ae1399dfd3fadb [2020-07-17 22:50:17,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:17,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:17,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:17,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:17,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:17,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:17,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fd9608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17, skipping insertion in model container [2020-07-17 22:50:17,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:17,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:17,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:17,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:17,855 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:17,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:17,890 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17 WrapperNode [2020-07-17 22:50:17,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:17,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:17,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:17,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:17,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:17,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (1/1) ... [2020-07-17 22:50:18,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:18,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:18,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:18,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:18,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (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 [2020-07-17 22:50:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 22:50:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:18,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:18,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:50:18,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:18 BoogieIcfgContainer [2020-07-17 22:50:18,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:18,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:18,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:18,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:18,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:17" (1/3) ... [2020-07-17 22:50:18,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b99516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:18, skipping insertion in model container [2020-07-17 22:50:18,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:17" (2/3) ... [2020-07-17 22:50:18,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b99516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:18, skipping insertion in model container [2020-07-17 22:50:18,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:18" (3/3) ... [2020-07-17 22:50:18,386 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-07-17 22:50:18,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:18,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:18,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:18,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:18,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:18,506 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:18,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:18,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:18,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:18,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:18,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 22:50:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:50:18,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:18,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:18,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2020-07-17 22:50:18,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:18,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58245449] [2020-07-17 22:50:18,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:18,720 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-17 22:50:18,722 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {23#true} {23#true} #39#return; {23#true} is VALID [2020-07-17 22:50:18,726 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2020-07-17 22:50:18,727 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-17 22:50:18,728 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #39#return; {23#true} is VALID [2020-07-17 22:50:18,728 INFO L263 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret2 := main(); {23#true} is VALID [2020-07-17 22:50:18,729 INFO L280 TraceCheckUtils]: 4: Hoare triple {23#true} havoc ~a~0;~len~0 := 0;havoc ~i~0; {23#true} is VALID [2020-07-17 22:50:18,736 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} assume !true; {24#false} is VALID [2020-07-17 22:50:18,737 INFO L263 TraceCheckUtils]: 6: Hoare triple {24#false} call __VERIFIER_assert((if ~len~0 % 4294967296 >= 0 && ~len~0 % 4294967296 < 5 then 1 else 0)); {24#false} is VALID [2020-07-17 22:50:18,738 INFO L280 TraceCheckUtils]: 7: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2020-07-17 22:50:18,739 INFO L280 TraceCheckUtils]: 8: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2020-07-17 22:50:18,739 INFO L280 TraceCheckUtils]: 9: Hoare triple {24#false} assume !false; {24#false} is VALID [2020-07-17 22:50:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:18,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58245449] [2020-07-17 22:50:18,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:18,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:50:18,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037047688] [2020-07-17 22:50:18,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:50:18,766 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:18,772 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:50:18,817 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:18,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:50:18,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:50:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:18,838 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-17 22:50:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:18,948 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-17 22:50:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:50:18,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:50:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2020-07-17 22:50:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2020-07-17 22:50:18,972 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 36 transitions. [2020-07-17 22:50:19,115 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:19,138 INFO L225 Difference]: With dead ends: 32 [2020-07-17 22:50:19,138 INFO L226 Difference]: Without dead ends: 13 [2020-07-17 22:50:19,145 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 [2020-07-17 22:50:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-17 22:50:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-17 22:50:19,204 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:19,205 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:19,206 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:19,207 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:19,211 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-17 22:50:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:19,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:19,213 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:19,214 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:19,214 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:19,219 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-17 22:50:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:19,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:19,220 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:19,221 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:19,221 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 22:50:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-17 22:50:19,226 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-17 22:50:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:19,227 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-17 22:50:19,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:50:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:50:19,229 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:19,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:19,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:19,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2020-07-17 22:50:19,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:19,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160107681] [2020-07-17 22:50:19,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:19,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:19,306 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 22:50:19,314 INFO L168 Benchmark]: Toolchain (without parser) took 1779.93 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 127.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:19,315 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:50:19,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.03 ms. Allocated memory is still 144.7 MB. Free memory was 102.3 MB in the beginning and 92.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:19,317 INFO L168 Benchmark]: Boogie Preprocessor took 142.86 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 180.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:19,318 INFO L168 Benchmark]: RCFGBuilder took 341.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 165.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:19,319 INFO L168 Benchmark]: TraceAbstraction took 932.64 ms. Allocated memory is still 201.9 MB. Free memory was 165.3 MB in the beginning and 127.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:19,324 INFO L336 ainManager$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 1.04 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.03 ms. Allocated memory is still 144.7 MB. Free memory was 102.3 MB in the beginning and 92.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.86 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 180.6 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.42 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 165.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 932.64 ms. Allocated memory is still 201.9 MB. Free memory was 165.3 MB in the beginning and 127.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...