/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:26:58,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:26:58,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:26:58,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:26:58,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:26:58,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:26:58,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:26:58,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:26:58,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:26:58,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:26:58,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:26:58,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:26:58,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:26:58,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:26:58,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:26:58,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:26:58,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:26:58,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:26:58,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:26:58,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:26:58,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:26:58,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:26:58,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:26:58,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:26:58,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 15:26:58,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:26:58,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:26:58,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:26:58,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:26:58,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:26:58,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:26:58,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:26:58,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:26:58,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:26:58,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:26:58,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:26:58,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:26:58,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:26:58,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:26:58,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:26:58,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:26:58,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:26:58,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:26:58,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:26:58,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:26:58,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:26:58,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:26:58,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:26:58,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:26:58,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:26:58,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:26:58,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:26:58,832 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:26:58,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:26:58,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:26:58,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:26:58,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:26:58,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:26:58,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:26:58,833 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:26:59,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:26:59,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:26:59,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:26:59,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:26:59,135 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:26:59,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2020-07-07 15:26:59,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4528b8d6/103b30d5c82e4dedb2484aff5d6f6c30/FLAG2ae5fb0b6 [2020-07-07 15:26:59,634 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:26:59,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2020-07-07 15:26:59,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4528b8d6/103b30d5c82e4dedb2484aff5d6f6c30/FLAG2ae5fb0b6 [2020-07-07 15:27:00,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4528b8d6/103b30d5c82e4dedb2484aff5d6f6c30 [2020-07-07 15:27:00,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:27:00,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:27:00,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:27:00,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:27:00,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:27:00,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6113eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00, skipping insertion in model container [2020-07-07 15:27:00,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:27:00,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:27:00,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:27:00,300 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:27:00,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:27:00,342 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:27:00,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00 WrapperNode [2020-07-07 15:27:00,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:27:00,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:27:00,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:27:00,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:27:00,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (1/1) ... [2020-07-07 15:27:00,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:27:00,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:27:00,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:27:00,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:27:00,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (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 [2020-07-07 15:27:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:27:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:27:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 15:27:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-07 15:27:00,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:27:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:27:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 15:27:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 15:27:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:27:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-07 15:27:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:27:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:27:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:27:00,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:27:00,824 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 15:27:00,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:27:00 BoogieIcfgContainer [2020-07-07 15:27:00,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:27:00,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:27:00,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:27:00,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:27:00,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:27:00" (1/3) ... [2020-07-07 15:27:00,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e29352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:27:00, skipping insertion in model container [2020-07-07 15:27:00,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:27:00" (2/3) ... [2020-07-07 15:27:00,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e29352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:27:00, skipping insertion in model container [2020-07-07 15:27:00,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:27:00" (3/3) ... [2020-07-07 15:27:00,849 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2020-07-07 15:27:00,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:27:00,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:27:00,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:27:00,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:27:00,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:27:00,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:27:00,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:27:00,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:27:00,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:27:00,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:27:00,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:27:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-07 15:27:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 15:27:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:27:00,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:27:00,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:27:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:27:00,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1256366237, now seen corresponding path program 1 times [2020-07-07 15:27:00,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:27:00,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223558533] [2020-07-07 15:27:00,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:27:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:27:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:27:01,016 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:27:01,017 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:27:01,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:27:01 BoogieIcfgContainer [2020-07-07 15:27:01,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:27:01,049 INFO L168 Benchmark]: Toolchain (without parser) took 1036.05 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 151.5 MB in the end (delta: -50.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,051 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.62 ms. Allocated memory is still 136.8 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,053 INFO L168 Benchmark]: Boogie Preprocessor took 128.64 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 179.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,054 INFO L168 Benchmark]: RCFGBuilder took 354.86 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 164.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,055 INFO L168 Benchmark]: TraceAbstraction took 208.18 ms. Allocated memory is still 200.3 MB. Free memory was 163.4 MB in the beginning and 151.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-07 15:27:01,059 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.62 ms. Allocated memory is still 136.8 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.64 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 179.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.86 ms. Allocated memory is still 200.3 MB. Free memory was 179.0 MB in the beginning and 164.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208.18 ms. Allocated memory is still 200.3 MB. Free memory was 163.4 MB in the beginning and 151.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] _Bool c = __VERIFIER_nondet_bool(); VAL [__VERIFIER_nondet_bool()=257, c=1] [L35] COND TRUE \read(c) VAL [c=1] [L36] CALL f(1) VAL [\old(d)=1] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, __VERIFIER_nondet_int()=0, d=1, x=0] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, __VERIFIER_nondet_int()=0, d=1, x=0, y=0] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, __VERIFIER_nondet_int()=0, d=1, k=0, x=0, y=0] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L14] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L17] COND FALSE !(z < k) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L18] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=46occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 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...