/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/geo1-ll_unwindbound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:23:20,945 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:23:20,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:23:21,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:23:21,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:23:21,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:23:21,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:23:21,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-05-01 08:23:21,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:23:21,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:23:21,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:23:21,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:23:21,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:23:21,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:23:21,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:23:21,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:23:21,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:23:21,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 08:23:21,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:23:21,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:23:21,136 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 08:23:21,161 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:23:21,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:23:21,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:23:21,168 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:23:21,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:23:21,168 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:23:21,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:23:21,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:23:21,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:23:21,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:23:21,170 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:23:21,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:23:21,171 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:23:21,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:23:21,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:23:21,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:23:21,172 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:23:21,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:23:21,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:23:21,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:23:21,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:23:21,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:23:21,173 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:23:21,174 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:23:21,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:23:21,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:23:21,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:23:21,748 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:23:21,749 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:23:21,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound100.c
[2021-05-01 08:23:21,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ab220da/52da06ed7bea4924868c9c169632b039/FLAG1ec665a9e
[2021-05-01 08:23:22,523 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:23:22,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound100.c
[2021-05-01 08:23:22,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ab220da/52da06ed7bea4924868c9c169632b039/FLAG1ec665a9e
[2021-05-01 08:23:22,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4ab220da/52da06ed7bea4924868c9c169632b039
[2021-05-01 08:23:22,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:23:22,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:23:22,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:23:22,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:23:22,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:23:22,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:22" (1/1) ...
[2021-05-01 08:23:22,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714d5c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:22, skipping insertion in model container
[2021-05-01 08:23:22,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:22" (1/1) ...
[2021-05-01 08:23:22,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:23:22,951 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:23:23,092 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/geo1-ll_unwindbound100.c[546,559]
[2021-05-01 08:23:23,114 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:23:23,128 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:23:23,168 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/geo1-ll_unwindbound100.c[546,559]
[2021-05-01 08:23:23,182 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:23:23,203 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:23:23,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23 WrapperNode
[2021-05-01 08:23:23,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:23:23,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:23:23,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:23:23,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:23:23,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (1/1) ...
[2021-05-01 08:23:23,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:23:23,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:23:23,317 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:23:23,317 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:23:23,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (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 08:23:23,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:23:23,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:23:23,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:23:23,418 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:23:23,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:23:23,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:23:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:23:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:23:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:23:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:23:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 08:23:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:23:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:23:23,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:23:23,813 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 08:23:23,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:23 BoogieIcfgContainer
[2021-05-01 08:23:23,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:23:23,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:23:23,817 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:23:23,821 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:23:23,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:23:22" (1/3) ...
[2021-05-01 08:23:23,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a23453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:23, skipping insertion in model container
[2021-05-01 08:23:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:23" (2/3) ...
[2021-05-01 08:23:23,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a23453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:23, skipping insertion in model container
[2021-05-01 08:23:23,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:23" (3/3) ...
[2021-05-01 08:23:23,833 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound100.c
[2021-05-01 08:23:23,841 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:23:23,846 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:23:23,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:23:23,893 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:23:23,894 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:23:23,894 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:23:23,894 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:23:23,894 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:23:23,894 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:23:23,894 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:23:23,894 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:23:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-05-01 08:23:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-05-01 08:23:23,961 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:23,963 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 08:23:23,963 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash 730417173, now seen corresponding path program 1 times
[2021-05-01 08:23:23,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:23,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064746751]
[2021-05-01 08:23:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:24,085 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:24,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:23:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:24,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:23:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:24,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2021-05-01 08:23:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:24,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:24,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:24,501 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 08:23:24,505 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:23:24,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064746751]
[2021-05-01 08:23:24,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1064746751] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:23:24,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:23:24,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:23:24,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168237308]
[2021-05-01 08:23:24,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:23:24,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:23:24,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:23:24,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:23:24,540 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (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 08:23:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:23:24,802 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions.
[2021-05-01 08:23:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:23:24,806 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, (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 23
[2021-05-01 08:23:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:23:24,816 INFO L225 Difference]: With dead ends: 54
[2021-05-01 08:23:24,817 INFO L226 Difference]: Without dead ends: 26
[2021-05-01 08:23:24,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:23:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2021-05-01 08:23:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2021-05-01 08:23:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-05-01 08:23:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions.
[2021-05-01 08:23:24,913 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23
[2021-05-01 08:23:24,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:23:24,913 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions.
[2021-05-01 08:23:24,914 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, (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 08:23:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions.
[2021-05-01 08:23:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-05-01 08:23:24,916 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:24,922 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 08:23:24,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:23:24,923 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash -942473515, now seen corresponding path program 1 times
[2021-05-01 08:23:24,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:24,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288838811]
[2021-05-01 08:23:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:24,936 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:24,976 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:23:24,976 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:23:24,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:23:25,010 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:23:25,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:23:25 BoogieIcfgContainer
[2021-05-01 08:23:25,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:23:25,017 INFO L168 Benchmark]: Toolchain (without parser) took 2114.80 ms. Allocated memory is still 191.9 MB. Free memory was 156.6 MB in the beginning and 122.3 MB in the end (delta: 34.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,018 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 191.9 MB. Free memory is still 173.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.49 ms. Allocated memory is still 191.9 MB. Free memory was 156.4 MB in the beginning and 174.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,020 INFO L168 Benchmark]: Boogie Preprocessor took 109.76 ms. Allocated memory is still 191.9 MB. Free memory was 174.2 MB in the beginning and 175.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,022 INFO L168 Benchmark]: RCFGBuilder took 498.66 ms. Allocated memory is still 191.9 MB. Free memory was 175.8 MB in the beginning and 160.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,023 INFO L168 Benchmark]: TraceAbstraction took 1196.90 ms. Allocated memory is still 191.9 MB. Free memory was 160.5 MB in the beginning and 122.3 MB in the end (delta: 38.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:25,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32 ms. Allocated memory is still 191.9 MB. Free memory is still 173.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 299.49 ms. Allocated memory is still 191.9 MB. Free memory was 156.4 MB in the beginning and 174.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 109.76 ms. Allocated memory is still 191.9 MB. Free memory was 174.2 MB in the beginning and 175.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 498.66 ms. Allocated memory is still 191.9 MB. Free memory was 175.8 MB in the beginning and 160.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1196.90 ms. Allocated memory is still 191.9 MB. Free memory was 160.5 MB in the beginning and 122.3 MB in the end (delta: 38.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 18]: 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:
[L22] int counter = 0;
[L24] int z, k;
[L25] long long x, y, c;
[L26] z = __VERIFIER_nondet_int()
[L27] k = __VERIFIER_nondet_int()
[L28] CALL assume_abort_if_not(z >= 1)
[L13] COND FALSE !(!cond)
[L28] RET assume_abort_if_not(z >= 1)
[L29] CALL assume_abort_if_not(k >= 1)
[L13] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(k >= 1)
[L31] x = 1
[L32] y = z
[L33] c = 1
[L35] EXPR counter++
[L35] COND TRUE counter++<100
[L36] CALL __VERIFIER_assert(x*z - x - y + 1 == 0)
[L16] COND TRUE !(cond)
[L18] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1095.7ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 29.9ms, AutomataDifference: 304.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 15 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 65.8ms 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...