/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/hard-u_valuebound5.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:24:05,035 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:24:05,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:24:05,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:24:05,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:24:05,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:24:05,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:24:05,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-05-01 08:24:05,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:24:05,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:24:05,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:24:05,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:24:05,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:24:05,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:24:05,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:24:05,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:24:05,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:24:05,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 08:24:05,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:24:05,127 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 08:24:05,134 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:24:05,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:24:05,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:24:05,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:24:05,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:24:05,137 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:24:05,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:24:05,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:24:05,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:24:05,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:24:05,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:24:05,138 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:24:05,138 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:24:05,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:24:05,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:24:05,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:24:05,400 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:24:05,400 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:24:05,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound5.c
[2021-05-01 08:24:05,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b48fd16/c529e0d2e9db4cf0be27cfa04a9210ae/FLAG476ab6c70
[2021-05-01 08:24:05,774 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:24:05,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound5.c
[2021-05-01 08:24:05,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b48fd16/c529e0d2e9db4cf0be27cfa04a9210ae/FLAG476ab6c70
[2021-05-01 08:24:06,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b48fd16/c529e0d2e9db4cf0be27cfa04a9210ae
[2021-05-01 08:24:06,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:24:06,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:24:06,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:06,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:24:06,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:24:06,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f503cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06, skipping insertion in model container
[2021-05-01 08:24:06,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:24:06,254 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:24:06,347 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/hard-u_valuebound5.c[545,558]
[2021-05-01 08:24:06,361 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:06,367 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:24:06,382 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/hard-u_valuebound5.c[545,558]
[2021-05-01 08:24:06,404 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:24:06,428 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:24:06,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06 WrapperNode
[2021-05-01 08:24:06,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:24:06,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:24:06,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:24:06,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:24:06,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (1/1) ...
[2021-05-01 08:24:06,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:24:06,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:24:06,502 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:24:06,502 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:24:06,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (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 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:24:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:24:06,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:24:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:24:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:24:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:24:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:24:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:24:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:24:06,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:24:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:24:06,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:24:06,829 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:24:06,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:06 BoogieIcfgContainer
[2021-05-01 08:24:06,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:24:06,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:24:06,831 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:24:06,833 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:24:06,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:24:06" (1/3) ...
[2021-05-01 08:24:06,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a64a6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:06, skipping insertion in model container
[2021-05-01 08:24:06,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:24:06" (2/3) ...
[2021-05-01 08:24:06,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a64a6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:24:06, skipping insertion in model container
[2021-05-01 08:24:06,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:24:06" (3/3) ...
[2021-05-01 08:24:06,835 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound5.c
[2021-05-01 08:24:06,839 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:24:06,843 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:24:06,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:24:06,868 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:24:06,868 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:24:06,869 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:24:06,869 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:24:06,869 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:24:06,869 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:24:06,869 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:24:06,869 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:24:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 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 08:24:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:06,886 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:06,887 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 08:24:06,887 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:06,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times
[2021-05-01 08:24:06,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:06,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241582166]
[2021-05-01 08:24:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:06,948 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,173 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 08:24:07,174 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:07,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241582166]
[2021-05-01 08:24:07,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [241582166] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:07,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:07,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:24:07,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276648458]
[2021-05-01 08:24:07,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:24:07,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:24:07,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:07,193 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 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 08:24:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:07,398 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions.
[2021-05-01 08:24:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:24:07,400 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 08:24:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:07,405 INFO L225 Difference]: With dead ends: 69
[2021-05-01 08:24:07,405 INFO L226 Difference]: Without dead ends: 33
[2021-05-01 08:24:07,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:24:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-05-01 08:24:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2021-05-01 08:24:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 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 08:24:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions.
[2021-05-01 08:24:07,439 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28
[2021-05-01 08:24:07,439 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:07,439 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions.
[2021-05-01 08:24:07,439 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 08:24:07,439 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions.
[2021-05-01 08:24:07,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:24:07,441 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:07,441 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 08:24:07,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:24:07,442 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:07,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:07,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times
[2021-05-01 08:24:07,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974386330]
[2021-05-01 08:24:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:07,449 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 08:24:07,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:07,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:07,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,576 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 08:24:07,576 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:07,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974386330]
[2021-05-01 08:24:07,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [974386330] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:07,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:07,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:24:07,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521783089]
[2021-05-01 08:24:07,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:24:07,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:24:07,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:24:07,578 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2021-05-01 08:24:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:07,887 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions.
[2021-05-01 08:24:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:24:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28
[2021-05-01 08:24:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:07,889 INFO L225 Difference]: With dead ends: 46
[2021-05-01 08:24:07,889 INFO L226 Difference]: Without dead ends: 44
[2021-05-01 08:24:07,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:24:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-05-01 08:24:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37.
[2021-05-01 08:24:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:24:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions.
[2021-05-01 08:24:07,912 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28
[2021-05-01 08:24:07,912 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:07,912 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions.
[2021-05-01 08:24:07,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)
[2021-05-01 08:24:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions.
[2021-05-01 08:24:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-05-01 08:24:07,914 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:07,914 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:07,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:24:07,914 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:07,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:07,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times
[2021-05-01 08:24:07,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:07,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619426128]
[2021-05-01 08:24:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:07,919 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:07,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:07,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17
[2021-05-01 08:24:08,008 INFO L142 QuantifierPusher]: treesize reduction 19, result has 83.2 percent of original size
[2021-05-01 08:24:08,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94
[2021-05-01 08:24:08,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:08,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:24:08,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:24:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:08,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:24:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:08,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:24:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:08,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:24:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:08,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2021-05-01 08:24:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:24:08,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:24:08,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:24:08,145 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 08:24:08,145 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:24:08,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619426128]
[2021-05-01 08:24:08,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [619426128] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:24:08,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:24:08,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:24:08,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338933542]
[2021-05-01 08:24:08,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:24:08,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:24:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:24:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:24:08,147 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:24:08,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:24:08,452 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions.
[2021-05-01 08:24:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:24:08,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2021-05-01 08:24:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:24:08,456 INFO L225 Difference]: With dead ends: 50
[2021-05-01 08:24:08,456 INFO L226 Difference]: Without dead ends: 48
[2021-05-01 08:24:08,457 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 169.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:24:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-05-01 08:24:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41.
[2021-05-01 08:24:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2021-05-01 08:24:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions.
[2021-05-01 08:24:08,487 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33
[2021-05-01 08:24:08,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:24:08,488 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions.
[2021-05-01 08:24:08,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2021-05-01 08:24:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions.
[2021-05-01 08:24:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-05-01 08:24:08,490 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:24:08,490 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 08:24:08,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 08:24:08,490 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:24:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:24:08,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times
[2021-05-01 08:24:08,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:24:08,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889761747]
[2021-05-01 08:24:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:24:08,493 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:24:08,510 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:24:08,510 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:24:08,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-05-01 08:24:08,525 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:24:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:24:08 BoogieIcfgContainer
[2021-05-01 08:24:08,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:24:08,527 INFO L168 Benchmark]: Toolchain (without parser) took 2302.65 ms. Allocated memory was 238.0 MB in the beginning and 286.3 MB in the end (delta: 48.2 MB). Free memory was 203.7 MB in the beginning and 248.7 MB in the end (delta: -45.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,527 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 238.0 MB. Free memory is still 220.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.00 ms. Allocated memory is still 238.0 MB. Free memory was 203.4 MB in the beginning and 221.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,527 INFO L168 Benchmark]: Boogie Preprocessor took 51.46 ms. Allocated memory is still 238.0 MB. Free memory was 221.2 MB in the beginning and 219.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,528 INFO L168 Benchmark]: RCFGBuilder took 327.95 ms. Allocated memory is still 238.0 MB. Free memory was 219.5 MB in the beginning and 204.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,528 INFO L168 Benchmark]: TraceAbstraction took 1694.79 ms. Allocated memory was 238.0 MB in the beginning and 286.3 MB in the end (delta: 48.2 MB). Free memory was 203.4 MB in the beginning and 248.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB.
[2021-05-01 08:24:08,530 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 238.0 MB. Free memory is still 220.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 222.00 ms. Allocated memory is still 238.0 MB. Free memory was 203.4 MB in the beginning and 221.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 51.46 ms. Allocated memory is still 238.0 MB. Free memory was 221.2 MB in the beginning and 219.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 327.95 ms. Allocated memory is still 238.0 MB. Free memory was 219.5 MB in the beginning and 204.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1694.79 ms. Allocated memory was 238.0 MB in the beginning and 286.3 MB in the end (delta: 48.2 MB). Free memory was 203.4 MB in the beginning and 248.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 4.5 MB. 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] unsigned int A, B;
[L24] unsigned int r, d, p, q;
[L25] A = __VERIFIER_nondet_unsigned_int()
[L26] CALL assume_abort_if_not(A>=0 && A<=5)
[L12] COND FALSE !(!cond)
[L26] RET assume_abort_if_not(A>=0 && A<=5)
[L27] B = __VERIFIER_nondet_unsigned_int()
[L28] CALL assume_abort_if_not(B>=0 && B<=5)
[L12] COND FALSE !(!cond)
[L28] RET assume_abort_if_not(B>=0 && B<=5)
[L29] CALL assume_abort_if_not(B >= 1)
[L12] COND FALSE !(!cond)
[L29] RET assume_abort_if_not(B >= 1)
[L31] r = A
[L32] d = B
[L33] p = 1
[L34] q = 0
[L36] COND TRUE 1
[L37] CALL __VERIFIER_assert(q == 0)
[L15] COND FALSE !(!(cond))
[L37] RET __VERIFIER_assert(q == 0)
[L38] CALL __VERIFIER_assert(r == A)
[L15] COND FALSE !(!(cond))
[L38] RET __VERIFIER_assert(r == A)
[L39] CALL __VERIFIER_assert(d == B * p)
[L15] COND TRUE !(cond)
[L17] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1646.9ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 13.7ms, AutomataDifference: 849.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 92 SDslu, 77 SDs, 0 SdLazy, 233 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 386.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 340.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 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...