/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:20:21,373 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:20:21,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:20:21,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:20:21,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:20:21,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:20:21,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:20:21,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:20:21,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:20:21,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-05-01 08:20:21,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 08:20:21,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 08:20:21,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:20:21,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:20:21,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:20:21,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:20:21,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:20:21,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:20:21,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:20:21,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:20:21,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:20:21,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:20:21,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 08:20:21,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:20:21,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:20:21,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2021-05-01 08:20:21,569 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:20:21,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:20:21,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:20:21,575 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:20:21,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:20:21,575 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:20:21,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:20:21,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:20:21,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:20:21,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:20:21,577 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:20:21,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:20:21,578 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:20:21,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:20:21,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:20:21,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:20:21,578 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:20:21,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:20:21,579 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:20:21,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:20:22,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:20:22,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:20:22,021 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:20:22,022 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:20:22,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound100.c
[2021-05-01 08:20:22,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb2b2d9b/a221f672f2f54284b666f05984cfbf6e/FLAG88def0378
[2021-05-01 08:20:22,735 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:20:22,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound100.c
[2021-05-01 08:20:22,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb2b2d9b/a221f672f2f54284b666f05984cfbf6e/FLAG88def0378
[2021-05-01 08:20:23,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb2b2d9b/a221f672f2f54284b666f05984cfbf6e
[2021-05-01 08:20:23,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:20:23,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:20:23,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:20:23,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:20:23,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:20:23,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565a4e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23, skipping insertion in model container
[2021-05-01 08:20:23,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:20:23,136 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:20:23,324 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589]
[2021-05-01 08:20:23,341 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:20:23,353 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:20:23,425 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589]
[2021-05-01 08:20:23,453 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:20:23,468 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:20:23,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23 WrapperNode
[2021-05-01 08:20:23,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:20:23,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:20:23,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:20:23,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:20:23,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (1/1) ...
[2021-05-01 08:20:23,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:20:23,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:20:23,515 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:20:23,516 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:20:23,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (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
[2021-05-01 08:20:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:20:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:20:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:20:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:20:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:20:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:20:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:20:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:20:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:20:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:20:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:20:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:20:23,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:20:23,944 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:20:23,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:23 BoogieIcfgContainer
[2021-05-01 08:20:23,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:20:23,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:20:23,949 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:20:23,952 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:20:23,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:20:23" (1/3) ...
[2021-05-01 08:20:23,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d70a873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:23, skipping insertion in model container
[2021-05-01 08:20:23,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:20:23" (2/3) ...
[2021-05-01 08:20:23,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d70a873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:20:23, skipping insertion in model container
[2021-05-01 08:20:23,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:20:23" (3/3) ...
[2021-05-01 08:20:23,957 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c
[2021-05-01 08:20:23,963 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:20:23,970 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:20:24,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:20:24,073 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:20:24,073 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:20:24,073 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:20:24,073 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:20:24,074 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:20:24,074 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:20:24,074 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:20:24,074 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:20:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2021-05-01 08:20:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:20:24,120 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:20:24,122 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:20:24,122 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:20:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:20:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1768835633, now seen corresponding path program 1 times
[2021-05-01 08:20:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:20:24,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148444543]
[2021-05-01 08:20:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:20:24,255 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:20:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:20:24,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:20:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:20:24,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:20:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:20:24,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:20:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:20:24,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:20:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:20:24,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:20:24,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:20:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-05-01 08:20:24,616 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:20:24,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148444543]
[2021-05-01 08:20:24,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [148444543] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:20:24,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:20:24,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:20:24,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123360815]
[2021-05-01 08:20:24,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:20:24,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:20:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:20:24,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:20:24,651 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:20:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:20:24,947 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions.
[2021-05-01 08:20:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:20:24,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2021-05-01 08:20:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:20:24,959 INFO L225 Difference]: With dead ends: 71
[2021-05-01 08:20:24,960 INFO L226 Difference]: Without dead ends: 34
[2021-05-01 08:20:24,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:20:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-05-01 08:20:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2021-05-01 08:20:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:20:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions.
[2021-05-01 08:20:25,041 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 28
[2021-05-01 08:20:25,041 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:20:25,041 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions.
[2021-05-01 08:20:25,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2021-05-01 08:20:25,042 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions.
[2021-05-01 08:20:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:20:25,044 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:20:25,044 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:20:25,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:20:25,046 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:20:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:20:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1378913883, now seen corresponding path program 1 times
[2021-05-01 08:20:25,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:20:25,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090729925]
[2021-05-01 08:20:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:20:25,058 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:20:25,096 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:20:25,097 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:20:25,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:20:25,124 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:20:25,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:20:25 BoogieIcfgContainer
[2021-05-01 08:20:25,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:20:25,126 INFO L168 Benchmark]: Toolchain (without parser) took 2025.62 ms. Allocated memory is still 200.3 MB. Free memory was 165.2 MB in the beginning and 171.3 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,127 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 200.3 MB. Free memory is still 181.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.52 ms. Allocated memory is still 200.3 MB. Free memory was 165.0 MB in the beginning and 182.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,128 INFO L168 Benchmark]: Boogie Preprocessor took 43.83 ms. Allocated memory is still 200.3 MB. Free memory was 182.8 MB in the beginning and 181.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,128 INFO L168 Benchmark]: RCFGBuilder took 431.08 ms. Allocated memory is still 200.3 MB. Free memory was 181.3 MB in the beginning and 165.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,129 INFO L168 Benchmark]: TraceAbstraction took 1176.07 ms. Allocated memory is still 200.3 MB. Free memory was 165.0 MB in the beginning and 171.3 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:20:25,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 200.3 MB. Free memory is still 181.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 367.52 ms. Allocated memory is still 200.3 MB. Free memory was 165.0 MB in the beginning and 182.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 43.83 ms. Allocated memory is still 200.3 MB. Free memory was 182.8 MB in the beginning and 181.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 431.08 ms. Allocated memory is still 200.3 MB. Free memory was 181.3 MB in the beginning and 165.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1176.07 ms. Allocated memory is still 200.3 MB. Free memory was 165.0 MB in the beginning and 171.3 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L23] int x, y;
[L24] long long q, r, a, b;
[L26] x = __VERIFIER_nondet_int()
[L27] CALL assume_abort_if_not(x>=0 && x<=100)
[L12] COND FALSE !(!cond)
[L27] RET assume_abort_if_not(x>=0 && x<=100)
[L28] y = __VERIFIER_nondet_int()
[L29] CALL assume_abort_if_not(y>=0 && y<=100)
[L12] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(y>=0 && y<=100)
[L31] CALL assume_abort_if_not(y >= 1)
[L12] COND FALSE !(!cond)
[L31] RET assume_abort_if_not(y >= 1)
[L33] q = 0
[L34] r = x
[L35] a = 0
[L36] b = 0
[L38] COND TRUE 1
[L39] CALL __VERIFIER_assert(b == y*a)
[L15] COND TRUE !(cond)
[L17] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1033.0ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 16.6ms, AutomataDifference: 335.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 21 SDslu, 3 SDs, 0 SdLazy, 13 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: 58.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...