/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:05:27,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:05:27,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:05:27,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:05:27,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:05:27,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:05:27,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:05:27,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:05:27,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:05:27,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:05:27,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:05:27,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:05:27,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:05:27,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:05:27,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:05:27,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:05:27,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:05:27,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:05:27,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:05:27,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:05:27,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:05:27,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:05:27,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:05:27,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:05:27,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:05:27,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:05:27,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:05:27,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:05:27,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:05:27,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:05:27,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:05:27,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:05:27,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:05:27,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:05:27,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:05:27,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:05:27,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:05:27,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:05:27,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:05:27,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:05:27,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:05:27,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:05:27,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:05:27,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:05:27,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:05:27,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:05:27,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:05:27,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:05:27,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:05:27,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:05:27,457 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:05:27,457 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:05:27,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:05:27,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:05:27,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:05:27,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:05:27,789 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:05:27,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2021-05-02 19:05:27,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f740ee87d/9a627bb487aa4fd092b4841a2fe22b1a/FLAG0fe9702f6 [2021-05-02 19:05:28,455 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:05:28,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2021-05-02 19:05:28,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f740ee87d/9a627bb487aa4fd092b4841a2fe22b1a/FLAG0fe9702f6 [2021-05-02 19:05:28,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f740ee87d/9a627bb487aa4fd092b4841a2fe22b1a [2021-05-02 19:05:28,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:05:28,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:05:28,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:05:28,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:05:28,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:05:28,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3f6190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28, skipping insertion in model container [2021-05-02 19:05:28,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:05:28,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:05:28,662 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/bin-suffix-5.c[359,372] [2021-05-02 19:05:28,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:05:28,685 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:05:28,744 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/bin-suffix-5.c[359,372] [2021-05-02 19:05:28,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:05:28,761 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:05:28,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28 WrapperNode [2021-05-02 19:05:28,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:05:28,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:05:28,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:05:28,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:05:28,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (1/1) ... [2021-05-02 19:05:28,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:05:28,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:05:28,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:05:28,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:05:28,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (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 [2021-05-02 19:05:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:05:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:05:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:05:28,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:05:28,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:05:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:05:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:05:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:05:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:05:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:05:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:05:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:05:29,144 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:05:29,145 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 19:05:29,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:05:29 BoogieIcfgContainer [2021-05-02 19:05:29,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:05:29,147 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:05:29,147 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:05:29,147 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:05:29,150 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:05:29" (1/1) ... [2021-05-02 19:05:29,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:05:29 BasicIcfg [2021-05-02 19:05:29,180 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:05:29,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:05:29,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:05:29,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:05:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:05:28" (1/4) ... [2021-05-02 19:05:29,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:05:29, skipping insertion in model container [2021-05-02 19:05:29,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:05:28" (2/4) ... [2021-05-02 19:05:29,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:05:29, skipping insertion in model container [2021-05-02 19:05:29,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:05:29" (3/4) ... [2021-05-02 19:05:29,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:05:29, skipping insertion in model container [2021-05-02 19:05:29,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:05:29" (4/4) ... [2021-05-02 19:05:29,187 INFO L111 eAbstractionObserver]: Analyzing ICFG bin-suffix-5.cJordan [2021-05-02 19:05:29,191 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:05:29,194 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:05:29,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:05:29,225 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:05:29,225 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:05:29,225 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:05:29,226 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:05:29,226 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:05:29,226 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:05:29,226 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:05:29,226 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:05:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 19:05:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 19:05:29,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:29,251 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:29,251 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:29,259 INFO L82 PathProgramCache]: Analyzing trace with hash -487068095, now seen corresponding path program 1 times [2021-05-02 19:05:29,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:29,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507465912] [2021-05-02 19:05:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:05:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:05:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 19:05:29,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:05:29,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507465912] [2021-05-02 19:05:29,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507465912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:05:29,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:05:29,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 19:05:29,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145193323] [2021-05-02 19:05:29,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 19:05:29,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:05:29,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 19:05:29,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:05:29,543 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:05:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:05:29,582 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 19:05:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 19:05:29,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 19:05:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:05:29,589 INFO L225 Difference]: With dead ends: 20 [2021-05-02 19:05:29,590 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 19:05:29,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:05:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 19:05:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 19:05:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:05:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 19:05:29,618 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 19:05:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:05:29,618 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 19:05:29,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:05:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 19:05:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 19:05:29,625 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:05:29,626 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:05:29,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 19:05:29,626 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:05:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:05:29,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2110189820, now seen corresponding path program 1 times [2021-05-02 19:05:29,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:05:29,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603435502] [2021-05-02 19:05:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:05:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 19:05:29,657 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 19:05:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 19:05:29,673 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 19:05:29,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 19:05:29,691 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 19:05:29,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:05:29,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:05:29 BasicIcfg [2021-05-02 19:05:29,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:05:29,715 INFO L168 Benchmark]: Toolchain (without parser) took 1230.96 ms. Allocated memory is still 177.2 MB. Free memory was 142.3 MB in the beginning and 115.8 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,717 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 177.2 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:05:29,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.47 ms. Allocated memory is still 177.2 MB. Free memory was 142.1 MB in the beginning and 160.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,719 INFO L168 Benchmark]: Boogie Preprocessor took 33.94 ms. Allocated memory is still 177.2 MB. Free memory was 160.9 MB in the beginning and 159.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,721 INFO L168 Benchmark]: RCFGBuilder took 347.79 ms. Allocated memory is still 177.2 MB. Free memory was 159.3 MB in the beginning and 146.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,722 INFO L168 Benchmark]: IcfgTransformer took 33.84 ms. Allocated memory is still 177.2 MB. Free memory was 146.2 MB in the beginning and 145.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,722 INFO L168 Benchmark]: TraceAbstraction took 531.61 ms. Allocated memory is still 177.2 MB. Free memory was 144.7 MB in the beginning and 115.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-05-02 19:05:29,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 177.2 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.47 ms. Allocated memory is still 177.2 MB. Free memory was 142.1 MB in the beginning and 160.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.94 ms. Allocated memory is still 177.2 MB. Free memory was 160.9 MB in the beginning and 159.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 347.79 ms. Allocated memory is still 177.2 MB. Free memory was 159.3 MB in the beginning and 146.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 33.84 ms. Allocated memory is still 177.2 MB. Free memory was 146.2 MB in the beginning and 145.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 531.61 ms. Allocated memory is still 177.2 MB. Free memory was 144.7 MB in the beginning and 115.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 16. Possible FailurePath: [L12] unsigned int x = 5; VAL [x=5] [L13] COND FALSE !(__VERIFIER_nondet_int()) [L16] CALL __VERIFIER_assert((x & 5) == 5) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 469.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 18.6ms, AutomataDifference: 60.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 11 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.5ms SsaConstructionTime, 53.8ms SatisfiabilityAnalysisTime, 150.8ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...