/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 BIGGEST_EQUIVALENCE_CLASS --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-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:12:23,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:12:23,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:12:23,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:12:23,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:12:23,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:12:23,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:12:23,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:12:23,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:12:23,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:12:23,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:12:23,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:12:23,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:12:23,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:12:23,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:12:23,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:12:23,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:12:23,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:12:23,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:12:23,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:12:23,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:12:23,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:12:23,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:12:23,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:12:23,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:12:23,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:12:23,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:12:23,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:12:23,404 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 [2020-07-20 06:12:23,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:12:23,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:12:23,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:12:23,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:12:23,422 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:12:23,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:12:23,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:12:23,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:12:23,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:12:23,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:12:23,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:12:23,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:12:23,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:12:23,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:12:23,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:12:23,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:12:23,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:12:23,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:12:23,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:12:23,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:12:23,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:12:23,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:12:23,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:12:23,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:12:23,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:12:23,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:12:23,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:12:23,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:12:23,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:12:23,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-20 06:12:23,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:12:23,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:12:23,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:12:23,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:12:23,742 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:12:23,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 06:12:23,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceceee7a3/0dc05409075e4a64a249fb47bdb357aa/FLAGfe2c88049 [2020-07-20 06:12:24,273 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:12:24,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 06:12:24,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceceee7a3/0dc05409075e4a64a249fb47bdb357aa/FLAGfe2c88049 [2020-07-20 06:12:24,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceceee7a3/0dc05409075e4a64a249fb47bdb357aa [2020-07-20 06:12:24,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:12:24,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:12:24,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:12:24,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:12:24,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:12:24,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:12:24" (1/1) ... [2020-07-20 06:12:24,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eea5cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:24, skipping insertion in model container [2020-07-20 06:12:24,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:12:24" (1/1) ... [2020-07-20 06:12:24,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:12:24,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:12:24,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:12:24,975 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:12:24,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:12:25,008 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:12:25,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25 WrapperNode [2020-07-20 06:12:25,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:12:25,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:12:25,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:12:25,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:12:25,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (1/1) ... [2020-07-20 06:12:25,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:12:25,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:12:25,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:12:25,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:12:25,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (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 [2020-07-20 06:12:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:12:25,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:12:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:12:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:12:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:12:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:12:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:12:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:12:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:12:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:12:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:12:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:12:25,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:12:25,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:12:25,413 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 06:12:25,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:12:25 BoogieIcfgContainer [2020-07-20 06:12:25,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:12:25,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:12:25,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:12:25,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:12:25,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:12:24" (1/3) ... [2020-07-20 06:12:25,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9b0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:12:25, skipping insertion in model container [2020-07-20 06:12:25,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:12:25" (2/3) ... [2020-07-20 06:12:25,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9b0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:12:25, skipping insertion in model container [2020-07-20 06:12:25,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:12:25" (3/3) ... [2020-07-20 06:12:25,427 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-07-20 06:12:25,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:12:25,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:12:25,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:12:25,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:12:25,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:12:25,486 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:12:25,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:12:25,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:12:25,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:12:25,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:12:25,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:12:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 06:12:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 06:12:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:25,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:12:25,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:25,518 INFO L82 PathProgramCache]: Analyzing trace with hash -647006370, now seen corresponding path program 1 times [2020-07-20 06:12:25,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:25,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319048410] [2020-07-20 06:12:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60cbd212 [2020-07-20 06:12:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:12:25,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319048410] [2020-07-20 06:12:25,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:12:25,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:12:25,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554600043] [2020-07-20 06:12:25,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:12:25,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:25,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:12:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:12:25,765 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-07-20 06:12:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:25,856 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 06:12:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:12:25,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-20 06:12:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:25,868 INFO L225 Difference]: With dead ends: 34 [2020-07-20 06:12:25,868 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 06:12:25,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:12:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 06:12:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 06:12:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 06:12:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 06:12:25,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-20 06:12:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:25,918 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 06:12:25,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:12:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 06:12:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 06:12:25,920 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:25,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:12:25,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:12:25,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash -657165101, now seen corresponding path program 1 times [2020-07-20 06:12:25,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:25,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107357284] [2020-07-20 06:12:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60cbd212 [2020-07-20 06:12:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:26,006 ERROR L253 erpolLogProxyWrapper]: Interpolant 3 not inductive [2020-07-20 06:12:26,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:12:26,009 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) 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:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-20 06:12:26,016 INFO L168 Benchmark]: Toolchain (without parser) took 1293.80 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.5 MB in the beginning and 144.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,017 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.45 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,020 INFO L168 Benchmark]: Boogie Preprocessor took 111.17 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,021 INFO L168 Benchmark]: RCFGBuilder took 296.82 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 169.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,022 INFO L168 Benchmark]: TraceAbstraction took 593.81 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 144.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:26,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.45 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.17 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.5 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.82 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 169.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 593.81 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 144.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...