/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/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:52:37,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:52:37,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:52:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:52:37,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:52:37,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:52:37,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:52:37,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:52:37,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:52:37,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:52:37,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:52:37,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:52:37,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:52:37,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:52:37,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:52:37,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:52:37,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:52:37,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:52:37,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:52:37,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:52:37,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:52:37,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:52:37,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:52:37,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:52:37,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:52:37,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:52:37,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:52:37,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:52:37,823 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 22:52:37,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:52:37,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:52:37,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:52:37,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:52:37,866 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:52:37,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:52:37,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:52:37,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:52:37,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:52:37,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:52:37,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:52:37,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:52:37,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:52:37,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:52:37,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:52:37,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:52:37,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:52:37,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:52:37,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:52:37,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:52:37,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:52:37,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:52:37,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:52:37,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:52:37,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:52:37,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:52:37,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:52:37,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:52:37,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:52:37,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:52:38,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:52:38,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:52:38,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:52:38,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:52:38,213 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:52:38,214 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-17 22:52:38,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3804b4be/bb66b13d0d4f4600afdee5e114c1843e/FLAGd0773c582 [2020-07-17 22:52:38,790 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:52:38,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-17 22:52:38,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3804b4be/bb66b13d0d4f4600afdee5e114c1843e/FLAGd0773c582 [2020-07-17 22:52:39,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3804b4be/bb66b13d0d4f4600afdee5e114c1843e [2020-07-17 22:52:39,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:52:39,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:52:39,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:39,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:52:39,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:52:39,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc51f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39, skipping insertion in model container [2020-07-17 22:52:39,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:52:39,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:52:39,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:39,383 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:52:39,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:39,421 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:52:39,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39 WrapperNode [2020-07-17 22:52:39,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:39,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:52:39,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:52:39,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:52:39,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (1/1) ... [2020-07-17 22:52:39,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:52:39,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:52:39,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:52:39,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:52:39,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (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 22:52:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:52:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:52:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:52:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:52:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:52:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 22:52:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:52:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:52:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:52:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:52:39,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:52:39,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:52:39,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:39 BoogieIcfgContainer [2020-07-17 22:52:39,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:52:39,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:52:39,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:52:39,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:52:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:52:39" (1/3) ... [2020-07-17 22:52:39,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c36c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:39, skipping insertion in model container [2020-07-17 22:52:39,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:39" (2/3) ... [2020-07-17 22:52:39,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c36c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:39, skipping insertion in model container [2020-07-17 22:52:39,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:39" (3/3) ... [2020-07-17 22:52:39,910 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-07-17 22:52:39,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:52:39,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:52:39,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:52:40,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:52:40,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:52:40,001 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:52:40,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:52:40,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:52:40,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:52:40,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:52:40,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:52:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 22:52:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:52:40,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:40,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:52:40,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:40,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-17 22:52:40,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:40,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948387190] [2020-07-17 22:52:40,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:40,207 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:52:40,208 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-17 22:52:40,211 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-17 22:52:40,211 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:52:40,211 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #38#return; {22#true} is VALID [2020-07-17 22:52:40,212 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret8 := main(); {22#true} is VALID [2020-07-17 22:52:40,212 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#true} ~w~0 := #t~nondet0;havoc #t~nondet0;~x~0 := ~w~0;~y~0 := #t~nondet1;havoc #t~nondet1;~z~0 := ~y~0; {22#true} is VALID [2020-07-17 22:52:40,220 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume !true; {23#false} is VALID [2020-07-17 22:52:40,220 INFO L263 TraceCheckUtils]: 6: Hoare triple {23#false} call __VERIFIER_assert((if ~w~0 % 4294967296 == ~x~0 % 4294967296 && ~y~0 % 4294967296 == ~z~0 % 4294967296 then 1 else 0)); {23#false} is VALID [2020-07-17 22:52:40,221 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2020-07-17 22:52:40,221 INFO L280 TraceCheckUtils]: 8: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2020-07-17 22:52:40,222 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-17 22:52:40,223 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 22:52:40,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948387190] [2020-07-17 22:52:40,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:52:40,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:52:40,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79654185] [2020-07-17 22:52:40,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:52:40,238 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:40,242 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:52:40,288 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 22:52:40,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:52:40,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:40,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:52:40,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:52:40,304 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-17 22:52:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:40,402 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-17 22:52:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:52:40,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 22:52:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:52:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:52:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:52:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:52:40,419 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-17 22:52:40,523 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:40,536 INFO L225 Difference]: With dead ends: 31 [2020-07-17 22:52:40,537 INFO L226 Difference]: Without dead ends: 12 [2020-07-17 22:52:40,541 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 22:52:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-17 22:52:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-17 22:52:40,595 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:40,596 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-17 22:52:40,596 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:52:40,597 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:52:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:40,601 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-17 22:52:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-17 22:52:40,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:40,602 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:40,602 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-17 22:52:40,602 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-17 22:52:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:40,609 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-17 22:52:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-17 22:52:40,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:40,610 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:40,610 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:40,611 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:52:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-17 22:52:40,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-17 22:52:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:40,616 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-17 22:52:40,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:52:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-17 22:52:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:52:40,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:40,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:52:40,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:52:40,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-17 22:52:40,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:40,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374395553] [2020-07-17 22:52:40,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:40,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:52:40,752 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 22:52:40,760 INFO L168 Benchmark]: Toolchain (without parser) took 1582.09 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 129.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,761 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,764 INFO L168 Benchmark]: Boogie Preprocessor took 135.85 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 183.6 MB in the end (delta: -91.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,765 INFO L168 Benchmark]: RCFGBuilder took 337.73 ms. Allocated memory is still 203.4 MB. Free memory was 183.6 MB in the beginning and 168.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,766 INFO L168 Benchmark]: TraceAbstraction took 856.67 ms. Allocated memory is still 203.4 MB. Free memory was 167.5 MB in the beginning and 129.0 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:52:40,770 INFO L336 ainManager$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 0.51 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.85 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 183.6 MB in the end (delta: -91.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.73 ms. Allocated memory is still 203.4 MB. Free memory was 183.6 MB in the beginning and 168.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 856.67 ms. Allocated memory is still 203.4 MB. Free memory was 167.5 MB in the beginning and 129.0 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 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...