/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 NUM_VARIABLES --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/loop-acceleration/simple_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:45:05,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:45:05,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:45:05,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:45:05,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:45:05,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:45:05,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:45:05,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:45:05,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:45:05,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:45:05,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:45:05,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:45:05,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:45:05,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:45:05,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:45:05,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:45:05,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:45:05,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:45:05,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:45:05,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:45:05,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:45:05,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:45:05,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:45:05,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:45:05,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:45:05,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:45:05,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:45:05,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:45:05,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:45:05,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:45:05,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:45:05,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:45:05,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:45:05,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:45:05,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:45:05,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:45:05,662 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 16:45:05,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:45:05,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:45:05,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:45:05,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:45:05,679 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:45:05,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:45:05,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:45:05,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:45:05,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:45:05,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:45:05,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:45:05,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:45:05,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:45:05,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:45:05,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:45:05,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:45:05,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:45:05,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:45:05,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:45:05,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:45:05,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:45:05,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:45:05,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:45:05,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:45:05,684 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 -> NUM_VARIABLES 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 16:45:05,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:45:06,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:45:06,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:45:06,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:45:06,007 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:45:06,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-21 16:45:06,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da1a1d3d/8260f5c1b76346f1924bf91e43e91a13/FLAG17b94303a [2020-07-21 16:45:06,529 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:45:06,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2020-07-21 16:45:06,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da1a1d3d/8260f5c1b76346f1924bf91e43e91a13/FLAG17b94303a [2020-07-21 16:45:06,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da1a1d3d/8260f5c1b76346f1924bf91e43e91a13 [2020-07-21 16:45:06,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:45:06,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:45:06,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:45:06,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:45:06,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:45:06,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:45:06" (1/1) ... [2020-07-21 16:45:06,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662a784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:06, skipping insertion in model container [2020-07-21 16:45:06,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:45:06" (1/1) ... [2020-07-21 16:45:06,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:45:06,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:45:07,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:45:07,154 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:45:07,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:45:07,190 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:45:07,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07 WrapperNode [2020-07-21 16:45:07,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:45:07,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:45:07,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:45:07,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:45:07,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (1/1) ... [2020-07-21 16:45:07,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:45:07,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:45:07,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:45:07,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:45:07,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (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 16:45:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:45:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:45:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:45:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:45:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:45:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-07-21 16:45:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:45:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:45:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:45:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:45:07,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:45:07,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:45:07,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:45:07 BoogieIcfgContainer [2020-07-21 16:45:07,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:45:07,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:45:07,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:45:07,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:45:07,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:45:06" (1/3) ... [2020-07-21 16:45:07,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10051f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:45:07, skipping insertion in model container [2020-07-21 16:45:07,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:45:07" (2/3) ... [2020-07-21 16:45:07,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10051f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:45:07, skipping insertion in model container [2020-07-21 16:45:07,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:45:07" (3/3) ... [2020-07-21 16:45:07,575 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2020-07-21 16:45:07,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:45:07,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:45:07,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:45:07,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:45:07,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:45:07,633 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:45:07,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:45:07,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:45:07,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:45:07,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:45:07,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:45:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 16:45:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:45:07,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:45:07,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:45:07,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:45:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:45:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-21 16:45:07,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:45:07,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165208441] [2020-07-21 16:45:07,672 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 16:45:07,747 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:45:07,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:45:07,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:45:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:45:07,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:45:07,780 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:45:07,781 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:45:07,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:45:08,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:45:08 BoogieIcfgContainer [2020-07-21 16:45:08,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:45:08,018 INFO L168 Benchmark]: Toolchain (without parser) took 1100.78 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 154.5 MB in the end (delta: -53.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,019 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.29 ms. Allocated memory is still 137.4 MB. Free memory was 100.9 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,021 INFO L168 Benchmark]: Boogie Preprocessor took 122.48 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,022 INFO L168 Benchmark]: RCFGBuilder took 252.18 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 169.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,023 INFO L168 Benchmark]: TraceAbstraction took 446.92 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 154.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:45:08,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.29 ms. Allocated memory is still 137.4 MB. Free memory was 100.9 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.48 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.18 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 169.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 446.92 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 154.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned short N = __VERIFIER_nondet_ushort(); [L15] COND FALSE !(x < N) VAL [N=0, x=0] [L19] CALL __VERIFIER_assert(x % 2) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...