/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/egcd3-ll_unwindbound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:22:29,171 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:22:29,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:22:29,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:22:29,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:22:29,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:22:29,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:22:29,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:22:29,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:22:29,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 08:22:29,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 08:22:29,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2021-05-01 08:22:29,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:22:29,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:22:29,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:22:29,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:22:29,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:22:29,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:22:29,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:22:29,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:22:29,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:22:29,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:22:29,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 08:22:29,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-05-01 08:22:29,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:22:29,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:22:29,262 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 08:22:29,275 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:22:29,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:22:29,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:22:29,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:22:29,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:22:29,280 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:22:29,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:22:29,281 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:22:29,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:22:29,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:22:29,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:22:29,281 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:22:29,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:22:29,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:22:29,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:22:29,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:22:29,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:22:29,282 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:22:29,282 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:22:29,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:22:29,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:22:29,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:22:29,627 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:22:29,628 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:22:29,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound100.c
[2021-05-01 08:22:29,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acd1c5f4/08f92623c06a4ef2a13333a2116f7fdc/FLAG8c48fbda8
[2021-05-01 08:22:30,043 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:22:30,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound100.c
[2021-05-01 08:22:30,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acd1c5f4/08f92623c06a4ef2a13333a2116f7fdc/FLAG8c48fbda8
[2021-05-01 08:22:30,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acd1c5f4/08f92623c06a4ef2a13333a2116f7fdc
[2021-05-01 08:22:30,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:22:30,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:22:30,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:22:30,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:22:30,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:22:30,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a26dd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30, skipping insertion in model container
[2021-05-01 08:22:30,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:22:30,456 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:22:30,571 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/egcd3-ll_unwindbound100.c[490,503]
[2021-05-01 08:22:30,594 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:22:30,604 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:22:30,628 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/egcd3-ll_unwindbound100.c[490,503]
[2021-05-01 08:22:30,662 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:22:30,672 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:22:30,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30 WrapperNode
[2021-05-01 08:22:30,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:22:30,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:22:30,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:22:30,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:22:30,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (1/1) ...
[2021-05-01 08:22:30,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:22:30,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:22:30,709 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:22:30,709 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:22:30,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (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 08:22:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:22:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:22:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:22:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:22:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:22:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:22:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:22:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:22:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:22:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:22:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:22:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:22:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:22:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:22:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:22:31,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:22:31,067 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-05-01 08:22:31,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:31 BoogieIcfgContainer
[2021-05-01 08:22:31,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:22:31,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:22:31,069 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:22:31,072 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:22:31,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:22:30" (1/3) ...
[2021-05-01 08:22:31,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3706a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:31, skipping insertion in model container
[2021-05-01 08:22:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:30" (2/3) ...
[2021-05-01 08:22:31,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3706a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:31, skipping insertion in model container
[2021-05-01 08:22:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:31" (3/3) ...
[2021-05-01 08:22:31,074 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound100.c
[2021-05-01 08:22:31,078 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:22:31,080 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:22:31,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:22:31,107 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:22:31,107 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:22:31,107 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:22:31,107 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:22:31,107 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:22:31,107 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:22:31,107 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:22:31,107 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:22:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2021-05-01 08:22:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-05-01 08:22:31,123 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:22:31,123 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:22:31,124 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:22:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:22:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1766263304, now seen corresponding path program 1 times
[2021-05-01 08:22:31,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:22:31,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880455957]
[2021-05-01 08:22:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:22:31,175 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:22:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:31,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:22:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:31,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:22:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:31,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-05-01 08:22:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:22:31,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:22:31,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:22:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-05-01 08:22:31,339 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:22:31,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880455957]
[2021-05-01 08:22:31,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [880455957] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:22:31,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:22:31,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:22:31,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138004208]
[2021-05-01 08:22:31,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:22:31,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:22:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:22:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:22:31,357 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2021-05-01 08:22:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:22:31,552 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions.
[2021-05-01 08:22:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:22:31,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2021-05-01 08:22:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:22:31,561 INFO L225 Difference]: With dead ends: 74
[2021-05-01 08:22:31,561 INFO L226 Difference]: Without dead ends: 36
[2021-05-01 08:22:31,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:22:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2021-05-01 08:22:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35.
[2021-05-01 08:22:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2021-05-01 08:22:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions.
[2021-05-01 08:22:31,614 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22
[2021-05-01 08:22:31,614 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:22:31,614 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions.
[2021-05-01 08:22:31,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2021-05-01 08:22:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions.
[2021-05-01 08:22:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-05-01 08:22:31,616 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:22:31,616 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:22:31,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:22:31,616 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:22:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:22:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash -81203399, now seen corresponding path program 1 times
[2021-05-01 08:22:31,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:22:31,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832798168]
[2021-05-01 08:22:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:22:31,624 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:22:31,642 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:22:31,643 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:22:31,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:22:31,659 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:22:31,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:22:31 BoogieIcfgContainer
[2021-05-01 08:22:31,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:22:31,663 INFO L168 Benchmark]: Toolchain (without parser) took 1235.51 ms. Allocated memory is still 187.7 MB. Free memory was 153.4 MB in the beginning and 162.9 MB in the end (delta: -9.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,664 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 187.7 MB. Free memory was 169.8 MB in the beginning and 169.7 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.02 ms. Allocated memory is still 187.7 MB. Free memory was 153.1 MB in the beginning and 171.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,665 INFO L168 Benchmark]: Boogie Preprocessor took 34.13 ms. Allocated memory is still 187.7 MB. Free memory was 171.0 MB in the beginning and 169.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,666 INFO L168 Benchmark]: RCFGBuilder took 359.56 ms. Allocated memory is still 187.7 MB. Free memory was 169.1 MB in the beginning and 151.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,667 INFO L168 Benchmark]: TraceAbstraction took 590.62 ms. Allocated memory is still 187.7 MB. Free memory was 151.3 MB in the beginning and 162.9 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:22:31,672 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 187.7 MB. Free memory was 169.8 MB in the beginning and 169.7 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 243.02 ms. Allocated memory is still 187.7 MB. Free memory was 153.1 MB in the beginning and 171.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.13 ms. Allocated memory is still 187.7 MB. Free memory was 171.0 MB in the beginning and 169.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 359.56 ms. Allocated memory is still 187.7 MB. Free memory was 169.1 MB in the beginning and 151.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 590.62 ms. Allocated memory is still 187.7 MB. Free memory was 151.3 MB in the beginning and 162.9 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 13]: 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:
[L18] int counter = 0;
[L20] int x, y;
[L21] long long a, b, p, q, r, s;
[L22] x = __VERIFIER_nondet_int()
[L23] y = __VERIFIER_nondet_int()
[L24] CALL assume_abort_if_not(x >= 1)
[L8] COND FALSE !(!cond)
[L24] RET assume_abort_if_not(x >= 1)
[L25] CALL assume_abort_if_not(y >= 1)
[L8] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(y >= 1)
[L27] a = x
[L28] b = y
[L29] p = 1
[L30] q = 0
[L31] r = 0
[L32] s = 1
[L34] EXPR counter++
[L34] COND FALSE !(counter++<100)
[L73] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a)
[L11] COND TRUE !(cond)
[L13] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 542.7ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 8.8ms, AutomataDifference: 219.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 29 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 39.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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...