/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:00:55,553 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 20:00:55,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:00:55,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:00:55,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:00:55,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:00:55,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:00:55,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:00:55,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:00:55,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:00:55,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:00:55,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:00:55,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:00:55,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:00:55,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:00:55,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:00:55,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:00:55,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:00:55,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:00:55,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:00:55,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:00:55,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:00:55,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:00:55,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:00:55,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:00:55,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:00:55,654 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 [2020-07-21 20:00:55,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:00:55,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:00:55,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:00:55,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:00:55,672 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:00:55,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:00:55,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:00:55,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:00:55,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:00:55,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:00:55,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:00:55,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:00:55,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:00:55,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:00:55,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:00:55,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:00:55,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:00:55,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:00:55,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:00:55,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:00:55,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:00:55,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:00:55,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:00:55,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:00:55,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:00:55,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:00:55,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:55,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:00:55,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:00:55,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 -> 2 [2020-07-21 20:00:55,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:00:56,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:00:56,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:00:56,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:00:56,018 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:00:56,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-21 20:00:56,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9980f16/07da4b7a7bf3432ea1e3331bcbbc2b4e/FLAG0024052f6 [2020-07-21 20:00:56,613 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:00:56,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-21 20:00:56,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9980f16/07da4b7a7bf3432ea1e3331bcbbc2b4e/FLAG0024052f6 [2020-07-21 20:00:56,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9980f16/07da4b7a7bf3432ea1e3331bcbbc2b4e [2020-07-21 20:00:56,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:00:56,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:00:56,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:56,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:00:56,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:00:56,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:56" (1/1) ... [2020-07-21 20:00:56,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606f5cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:56, skipping insertion in model container [2020-07-21 20:00:56,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:00:56" (1/1) ... [2020-07-21 20:00:56,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:00:56,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:00:57,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:57,209 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:00:57,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:00:57,243 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:00:57,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57 WrapperNode [2020-07-21 20:00:57,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:00:57,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:00:57,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:00:57,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:00:57,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (1/1) ... [2020-07-21 20:00:57,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:00:57,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:00:57,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:00:57,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:00:57,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (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 [2020-07-21 20:00:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:00:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:00:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:00:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:00:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:00:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:00:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 20:00:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:00:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:00:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:00:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:00:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:00:57,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:00:57,670 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 20:00:57,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:57 BoogieIcfgContainer [2020-07-21 20:00:57,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:00:57,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:00:57,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:00:57,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:00:57,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:00:56" (1/3) ... [2020-07-21 20:00:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48182fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:57, skipping insertion in model container [2020-07-21 20:00:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:00:57" (2/3) ... [2020-07-21 20:00:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48182fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:00:57, skipping insertion in model container [2020-07-21 20:00:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:00:57" (3/3) ... [2020-07-21 20:00:57,684 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-07-21 20:00:57,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:00:57,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:00:57,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:00:57,739 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:00:57,739 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:00:57,739 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:00:57,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:00:57,740 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:00:57,740 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:00:57,740 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:00:57,740 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:00:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 20:00:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 20:00:57,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:57,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:57,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-07-21 20:00:57,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:57,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443661913] [2020-07-21 20:00:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:57,896 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:00:57,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:57,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 20:00:57,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:58,006 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-07-21 20:00:58,008 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:58,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:58,022 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:00:58,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:7 [2020-07-21 20:00:58,106 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:58,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:58,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443661913] [2020-07-21 20:00:58,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:58,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 20:00:58,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564763959] [2020-07-21 20:00:58,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:00:58,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:00:58,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:00:58,170 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-07-21 20:00:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:58,362 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2020-07-21 20:00:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 20:00:58,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-21 20:00:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:58,375 INFO L225 Difference]: With dead ends: 37 [2020-07-21 20:00:58,376 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 20:00:58,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-07-21 20:00:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 20:00:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-07-21 20:00:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 20:00:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-21 20:00:58,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-07-21 20:00:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:58,424 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-21 20:00:58,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:00:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-21 20:00:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 20:00:58,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:58,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:58,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:58,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-07-21 20:00:58,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:58,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23974407] [2020-07-21 20:00:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:58,698 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:00:58,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:58,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 20:00:58,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:58,737 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:58,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-07-21 20:00:58,739 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:58,742 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:58,743 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:00:58,743 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:4 [2020-07-21 20:00:58,767 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:58,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:58,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23974407] [2020-07-21 20:00:58,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:58,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:00:58,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960055837] [2020-07-21 20:00:58,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:00:58,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:00:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:00:58,793 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-07-21 20:00:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:58,877 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-21 20:00:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:00:58,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 20:00:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:58,880 INFO L225 Difference]: With dead ends: 21 [2020-07-21 20:00:58,880 INFO L226 Difference]: Without dead ends: 14 [2020-07-21 20:00:58,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:00:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-21 20:00:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-21 20:00:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-21 20:00:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-21 20:00:58,894 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-07-21 20:00:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:58,895 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-21 20:00:58,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:00:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-21 20:00:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 20:00:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:00:58,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:00:59,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:59,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:00:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:00:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-07-21 20:00:59,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:00:59,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995277186] [2020-07-21 20:00:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:59,196 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:00:59,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:00:59,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:00:59,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:00:59,223 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 20:00:59,224 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:00:59,228 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:00:59,229 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:00:59,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 20:00:59,238 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:59,241 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:59,313 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:00:59,316 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:00:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:00:59,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:00:59,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995277186] [2020-07-21 20:00:59,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:00:59,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:00:59,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094067644] [2020-07-21 20:00:59,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:00:59,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:00:59,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:00:59,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:00:59,329 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 5 states. [2020-07-21 20:00:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:00:59,401 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-21 20:00:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:00:59,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 20:00:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:00:59,402 INFO L225 Difference]: With dead ends: 14 [2020-07-21 20:00:59,402 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:00:59,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:00:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:00:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:00:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:00:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:00:59,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-21 20:00:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:00:59,404 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:00:59,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:00:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:00:59,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:00:59,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:00:59,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:00:59,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:00:59,661 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:00:59,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:00:59,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:00:59,661 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 20:00:59,662 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:00:59,662 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:00:59,662 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-21 20:00:59,662 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-21 20:00:59,662 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-07-21 20:00:59,662 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-21 20:00:59,663 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-07-21 20:00:59,663 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-21 20:00:59,663 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-21 20:00:59,663 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-21 20:00:59,663 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-07-21 20:00:59,663 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-07-21 20:00:59,664 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2020-07-21 20:00:59,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:00:59 BoogieIcfgContainer [2020-07-21 20:00:59,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:00:59,677 INFO L168 Benchmark]: Toolchain (without parser) took 2743.25 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 103.2 MB in the beginning and 189.1 MB in the end (delta: -85.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,678 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.11 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,680 INFO L168 Benchmark]: Boogie Preprocessor took 142.32 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,681 INFO L168 Benchmark]: RCFGBuilder took 287.67 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 167.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,682 INFO L168 Benchmark]: TraceAbstraction took 1999.12 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 189.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:00:59,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.11 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.32 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.67 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 167.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1999.12 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 189.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 31 SDslu, 84 SDs, 0 SdLazy, 72 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 1 QuantifiedInterpolants, 1548 SizeOfPredicates, 18 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...