/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:40:31,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:40:31,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:40:31,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:40:31,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:40:31,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:40:31,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:40:31,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:40:31,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:40:31,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:40:31,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:40:31,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:40:31,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:40:31,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:40:31,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:40:31,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:40:31,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:40:31,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:40:31,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:40:31,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:40:31,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:40:31,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:40:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:40:31,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:40:31,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:40:31,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:40:31,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:40:31,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:40:31,496 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 [2020-07-19 23:40:31,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:40:31,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:40:31,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:40:31,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:40:31,534 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:40:31,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:40:31,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:40:31,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:40:31,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:40:31,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:40:31,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:40:31,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:40:31,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:40:31,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:40:31,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:40:31,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:40:31,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:40:31,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:40:31,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:40:31,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:40:31,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:40:31,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:40:31,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:40:31,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:40:31,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:40:31,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:40:31,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:40:31,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:40:31,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:40:31,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:40:31,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:40:31,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:40:31,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:40:31,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:40:31,897 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:40:31,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2020-07-19 23:40:32,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b2beeb/08bb362b2d4c48c2a5c1b85ca96acff1/FLAG466c2b92d [2020-07-19 23:40:32,729 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:40:32,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2020-07-19 23:40:32,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b2beeb/08bb362b2d4c48c2a5c1b85ca96acff1/FLAG466c2b92d [2020-07-19 23:40:32,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b2beeb/08bb362b2d4c48c2a5c1b85ca96acff1 [2020-07-19 23:40:33,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:40:33,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:40:33,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:33,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:40:33,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:40:33,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:32" (1/1) ... [2020-07-19 23:40:33,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3883adbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33, skipping insertion in model container [2020-07-19 23:40:33,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:40:32" (1/1) ... [2020-07-19 23:40:33,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:40:33,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:40:33,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:33,318 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:40:33,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:40:33,366 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:40:33,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33 WrapperNode [2020-07-19 23:40:33,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:40:33,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:40:33,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:40:33,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:40:33,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (1/1) ... [2020-07-19 23:40:33,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:40:33,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:40:33,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:40:33,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:40:33,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (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 [2020-07-19 23:40:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:40:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:40:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:40:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:40:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-19 23:40:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:40:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:40:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:40:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:40:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:40:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-19 23:40:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:40:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-19 23:40:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:40:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:40:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:40:33,950 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:40:33,951 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:40:33,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:33 BoogieIcfgContainer [2020-07-19 23:40:33,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:40:33,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:40:33,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:40:33,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:40:33,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:40:32" (1/3) ... [2020-07-19 23:40:33,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b7edfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:33, skipping insertion in model container [2020-07-19 23:40:33,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:40:33" (2/3) ... [2020-07-19 23:40:33,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b7edfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:40:33, skipping insertion in model container [2020-07-19 23:40:33,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:40:33" (3/3) ... [2020-07-19 23:40:33,973 INFO L109 eAbstractionObserver]: Analyzing ICFG trex04.c [2020-07-19 23:40:33,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:40:34,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:40:34,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:40:34,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:40:34,100 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:40:34,101 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:40:34,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:40:34,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:40:34,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:40:34,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:40:34,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:40:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-19 23:40:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 23:40:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:34,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:34,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1434576833, now seen corresponding path program 1 times [2020-07-19 23:40:34,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:34,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372568006] [2020-07-19 23:40:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f82aa76 [2020-07-19 23:40:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:34,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372568006] [2020-07-19 23:40:34,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:40:34,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:40:34,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953943060] [2020-07-19 23:40:34,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:40:34,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:34,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:40:34,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:40:34,432 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-19 23:40:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:34,462 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-07-19 23:40:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:40:34,464 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-19 23:40:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:34,480 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:40:34,481 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 23:40:34,484 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 [2020-07-19 23:40:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 23:40:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-19 23:40:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 23:40:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-07-19 23:40:34,543 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2020-07-19 23:40:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:34,544 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-07-19 23:40:34,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:40:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2020-07-19 23:40:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 23:40:34,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:34,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:34,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:40:34,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1438270917, now seen corresponding path program 1 times [2020-07-19 23:40:34,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:34,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204786896] [2020-07-19 23:40:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f82aa76 [2020-07-19 23:40:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:34,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204786896] [2020-07-19 23:40:34,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:40:34,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:40:34,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119561117] [2020-07-19 23:40:34,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:40:34,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:40:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:40:34,785 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2020-07-19 23:40:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:34,885 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-07-19 23:40:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:40:34,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-19 23:40:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:34,888 INFO L225 Difference]: With dead ends: 24 [2020-07-19 23:40:34,888 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:40:34,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:40:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:40:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:40:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:40:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:40:34,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-19 23:40:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:34,891 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:40:34,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:40:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:40:34,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:40:34,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:40:34,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:40:34,957 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:40:34,958 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:40:34,960 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 16 23) no Hoare annotation was computed. [2020-07-19 23:40:34,961 INFO L271 CegarLoopResult]: At program point fooENTRY(lines 16 23) the Hoare annotation is: true [2020-07-19 23:40:34,961 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-19 23:40:34,961 INFO L268 CegarLoopResult]: For program point L21-1(lines 16 23) no Hoare annotation was computed. [2020-07-19 23:40:34,961 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-07-19 23:40:34,962 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:40:34,962 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:40:34,962 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:40:34,962 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:40:34,963 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:40:34,963 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 23:40:34,965 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:40:34,969 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:40:34,970 INFO L271 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-07-19 23:40:34,971 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-07-19 23:40:34,971 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-19 23:40:34,975 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 46) no Hoare annotation was computed. [2020-07-19 23:40:34,976 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 46) no Hoare annotation was computed. [2020-07-19 23:40:34,977 INFO L268 CegarLoopResult]: For program point L40-1(lines 26 46) no Hoare annotation was computed. [2020-07-19 23:40:34,977 INFO L264 CegarLoopResult]: At program point L40-2(lines 40 43) the Hoare annotation is: (<= main_~x~0 0) [2020-07-19 23:40:34,983 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-19 23:40:34,983 INFO L268 CegarLoopResult]: For program point L32-2(lines 26 46) no Hoare annotation was computed. [2020-07-19 23:40:34,984 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 46) the Hoare annotation is: true [2020-07-19 23:40:34,984 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-19 23:40:34,984 INFO L271 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-07-19 23:40:34,984 INFO L268 CegarLoopResult]: For program point L37-3(lines 26 46) no Hoare annotation was computed. [2020-07-19 23:40:34,985 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-07-19 23:40:34,985 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-07-19 23:40:34,985 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-19 23:40:34,985 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-07-19 23:40:34,985 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-07-19 23:40:34,986 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-19 23:40:35,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:40:35 BoogieIcfgContainer [2020-07-19 23:40:35,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:40:35,008 INFO L168 Benchmark]: Toolchain (without parser) took 2000.96 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.4 MB in the beginning and 134.4 MB in the end (delta: -32.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,009 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.22 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,013 INFO L168 Benchmark]: Boogie Preprocessor took 146.80 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 92.2 MB in the beginning and 184.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,014 INFO L168 Benchmark]: RCFGBuilder took 443.34 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 167.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,017 INFO L168 Benchmark]: TraceAbstraction took 1043.11 ms. Allocated memory is still 203.9 MB. Free memory was 167.1 MB in the beginning and 134.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:35,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.22 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.80 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 92.2 MB in the beginning and 184.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.34 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 167.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1043.11 ms. Allocated memory is still 203.9 MB. Free memory was 167.1 MB in the beginning and 134.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 1 SDslu, 79 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 11 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...