/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:34:59,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:34:59,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:34:59,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:34:59,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:34:59,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:34:59,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:34:59,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:34:59,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:34:59,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:34:59,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:34:59,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:34:59,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:34:59,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:34:59,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:34:59,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:34:59,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:34:59,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:34:59,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:34:59,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:34:59,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:34:59,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:34:59,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:34:59,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:34:59,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:34:59,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:34:59,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:34:59,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:34:59,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:34:59,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:34:59,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:34:59,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:34:59,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:34:59,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:34:59,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:34:59,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:34:59,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:34:59,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:34:59,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:34:59,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:34:59,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:34:59,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:34:59,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:34:59,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:34:59,389 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:34:59,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:34:59,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:34:59,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:34:59,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:34:59,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:34:59,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:34:59,390 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 06:34:59,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:34:59,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:34:59,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:34:59,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:34:59,757 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:34:59,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-18 06:34:59,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7d88a54/147d0bafb44b4013968af151503e5c72/FLAG165a37b22 [2020-07-18 06:35:00,480 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:35:00,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2020-07-18 06:35:00,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7d88a54/147d0bafb44b4013968af151503e5c72/FLAG165a37b22 [2020-07-18 06:35:00,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7d88a54/147d0bafb44b4013968af151503e5c72 [2020-07-18 06:35:00,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:35:00,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:35:00,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:35:00,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:35:00,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:35:00,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:35:00" (1/1) ... [2020-07-18 06:35:00,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c3269e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:00, skipping insertion in model container [2020-07-18 06:35:00,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:35:00" (1/1) ... [2020-07-18 06:35:00,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:35:00,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:35:01,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:35:01,096 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:35:01,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:35:01,132 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:35:01,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01 WrapperNode [2020-07-18 06:35:01,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:35:01,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:35:01,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:35:01,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:35:01,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (1/1) ... [2020-07-18 06:35:01,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:35:01,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:35:01,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:35:01,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:35:01,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (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 [2020-07-18 06:35:01,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:35:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:35:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:35:01,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:35:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:35:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 06:35:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:35:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:35:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:35:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:35:01,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:35:01,696 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 06:35:01,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:35:01 BoogieIcfgContainer [2020-07-18 06:35:01,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:35:01,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:35:01,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:35:01,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:35:01,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:35:00" (1/3) ... [2020-07-18 06:35:01,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3776f7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:35:01, skipping insertion in model container [2020-07-18 06:35:01,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:01" (2/3) ... [2020-07-18 06:35:01,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3776f7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:35:01, skipping insertion in model container [2020-07-18 06:35:01,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:35:01" (3/3) ... [2020-07-18 06:35:01,717 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2020-07-18 06:35:01,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:35:01,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:35:01,766 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:35:01,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:35:01,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:35:01,795 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:35:01,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:35:01,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:35:01,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:35:01,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:35:01,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:35:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-18 06:35:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-18 06:35:01,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:35:01,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:35:01,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:35:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:35:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-07-18 06:35:01,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:35:01,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937258826] [2020-07-18 06:35:01,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:35:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:35:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:35:01,998 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-18 06:35:01,999 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {28#true} {28#true} #39#return; {28#true} is VALID [2020-07-18 06:35:02,001 INFO L263 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2020-07-18 06:35:02,001 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-18 06:35:02,001 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #39#return; {28#true} is VALID [2020-07-18 06:35:02,002 INFO L263 TraceCheckUtils]: 3: Hoare triple {28#true} call #t~ret3 := main(); {28#true} is VALID [2020-07-18 06:35:02,002 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#true} ~x~0 := #t~nondet0; {28#true} is VALID [2020-07-18 06:35:02,003 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#true} havoc #t~nondet0; {28#true} is VALID [2020-07-18 06:35:02,003 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#true} ~y~0 := 1 + ~x~0; {28#true} is VALID [2020-07-18 06:35:02,006 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-18 06:35:02,007 INFO L263 TraceCheckUtils]: 8: Hoare triple {29#false} call __VERIFIER_assert((if ~x~0 % 4294967296 == ~y~0 % 4294967296 then 1 else 0)); {29#false} is VALID [2020-07-18 06:35:02,008 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2020-07-18 06:35:02,008 INFO L280 TraceCheckUtils]: 10: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2020-07-18 06:35:02,009 INFO L280 TraceCheckUtils]: 11: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-18 06:35:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:35:02,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937258826] [2020-07-18 06:35:02,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:35:02,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 06:35:02,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277805401] [2020-07-18 06:35:02,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-18 06:35:02,034 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:35:02,039 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 06:35:02,111 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:02,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 06:35:02,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:35:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 06:35:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 06:35:02,130 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-18 06:35:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:02,258 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-18 06:35:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 06:35:02,259 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-18 06:35:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:35:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:35:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2020-07-18 06:35:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:35:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2020-07-18 06:35:02,277 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 39 transitions. [2020-07-18 06:35:02,366 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:02,381 INFO L225 Difference]: With dead ends: 36 [2020-07-18 06:35:02,381 INFO L226 Difference]: Without dead ends: 19 [2020-07-18 06:35:02,387 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 [2020-07-18 06:35:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-18 06:35:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-18 06:35:02,460 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:35:02,461 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:02,462 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:02,462 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:02,468 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-18 06:35:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-18 06:35:02,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:35:02,469 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:35:02,469 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:02,470 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:02,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:02,475 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-18 06:35:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-18 06:35:02,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:35:02,477 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:35:02,477 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:35:02,478 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:35:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-18 06:35:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-18 06:35:02,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-07-18 06:35:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:35:02,484 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-18 06:35:02,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 06:35:02,485 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 19 transitions. [2020-07-18 06:35:02,525 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-18 06:35:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-18 06:35:02,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:35:02,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:35:02,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:35:02,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:35:02,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:35:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-07-18 06:35:02,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:35:02,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896608428] [2020-07-18 06:35:02,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:35:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:35:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:35:02,639 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 06:35:02,640 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 06:35:02,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:35:02,674 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 06:35:02,674 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:35:02,674 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:35:02,674 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 06:35:02,675 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 06:35:02,675 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 06:35:02,675 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:35:02,675 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:35:02,675 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-18 06:35:02,676 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:35:02,677 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:35:02,678 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 06:35:02,682 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-18 06:35:02,682 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-18 06:35:02,682 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-18 06:35:02,683 WARN L170 areAnnotationChecker]: L5-2 has no Hoare annotation [2020-07-18 06:35:02,683 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-18 06:35:02,683 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-18 06:35:02,691 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-18 06:35:02,691 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:35:02,691 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-18 06:35:02,692 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-18 06:35:02,692 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-18 06:35:02,692 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 06:35:02,692 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-18 06:35:02,693 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 06:35:02,693 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-18 06:35:02,693 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-18 06:35:02,694 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-18 06:35:02,694 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-18 06:35:02,694 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:35:02,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:35:02 BoogieIcfgContainer [2020-07-18 06:35:02,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:35:02,708 INFO L168 Benchmark]: Toolchain (without parser) took 1877.66 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 113.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:02,709 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 06:35:02,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.43 ms. Allocated memory is still 141.6 MB. Free memory was 99.8 MB in the beginning and 90.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:02,714 INFO L168 Benchmark]: Boogie Preprocessor took 131.02 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 90.3 MB in the beginning and 179.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:02,716 INFO L168 Benchmark]: RCFGBuilder took 433.99 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 162.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:02,717 INFO L168 Benchmark]: TraceAbstraction took 999.49 ms. Allocated memory is still 199.2 MB. Free memory was 162.9 MB in the beginning and 113.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:02,732 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 0.26 ms. Allocated memory is still 141.6 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.43 ms. Allocated memory is still 141.6 MB. Free memory was 99.8 MB in the beginning and 90.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.02 ms. Allocated memory was 141.6 MB in the beginning and 199.2 MB in the end (delta: 57.7 MB). Free memory was 90.3 MB in the beginning and 179.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.99 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 162.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 999.49 ms. Allocated memory is still 199.2 MB. Free memory was 162.9 MB in the beginning and 113.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = __VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=-1, x=4294967295] [L13] unsigned int y = x + 1; VAL [x=4294967295, y=0] [L15] COND FALSE !(x < 1024) VAL [x=4294967295, y=0] [L20] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...