/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-ll_valuebound50.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 08:23:56,551 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 08:23:56,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 08:23:56,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 08:23:56,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 08:23:56,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 08:23:56,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 08:23:56,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 08:23:56,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 08:23:56,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 08:23:56,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 08:23:56,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2021-05-01 08:23:56,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 08:23:56,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 08:23:56,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 08:23:56,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 08:23:56,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 08:23:56,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 08:23:56,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 08:23:56,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 08:23:56,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 08:23:56,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 08:23:56,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-05-01 08:23:56,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 08:23:56,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 08:23:56,659 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 08:23:56,668 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 08:23:56,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 08:23:56,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 08:23:56,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 08:23:56,672 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 08:23:56,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 08:23:56,672 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 08:23:56,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 08:23:56,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-05-01 08:23:56,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 08:23:56,674 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2021-05-01 08:23:56,674 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 08:23:56,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 08:23:56,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 08:23:56,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 08:23:56,937 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 08:23:56,937 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 08:23:56,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound50.c
[2021-05-01 08:23:56,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b344c4ec3/6a731273bf41474e8f3e232dd77fe308/FLAG994059d26
[2021-05-01 08:23:57,411 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 08:23:57,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound50.c
[2021-05-01 08:23:57,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b344c4ec3/6a731273bf41474e8f3e232dd77fe308/FLAG994059d26
[2021-05-01 08:23:57,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b344c4ec3/6a731273bf41474e8f3e232dd77fe308
[2021-05-01 08:23:57,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 08:23:57,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 08:23:57,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 08:23:57,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 08:23:57,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 08:23:57,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de5d6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57, skipping insertion in model container
[2021-05-01 08:23:57,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 08:23:57,458 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 08:23:57,540 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-ll_valuebound50.c[546,559]
[2021-05-01 08:23:57,550 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:23:57,555 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 08:23:57,563 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-ll_valuebound50.c[546,559]
[2021-05-01 08:23:57,568 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 08:23:57,612 INFO L208 MainTranslator]: Completed translation
[2021-05-01 08:23:57,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57 WrapperNode
[2021-05-01 08:23:57,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 08:23:57,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 08:23:57,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 08:23:57,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 08:23:57,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (1/1) ...
[2021-05-01 08:23:57,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 08:23:57,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 08:23:57,651 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 08:23:57,651 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 08:23:57,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (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 08:23:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 08:23:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 08:23:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 08:23:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 08:23:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 08:23:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 08:23:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 08:23:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 08:23:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 08:23:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 08:23:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 08:23:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 08:23:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 08:23:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 08:23:57,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 08:23:57,991 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 08:23:57,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:57 BoogieIcfgContainer
[2021-05-01 08:23:57,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 08:23:57,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 08:23:57,993 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 08:23:57,995 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 08:23:57,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:23:57" (1/3) ...
[2021-05-01 08:23:57,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aae0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:57, skipping insertion in model container
[2021-05-01 08:23:57,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:57" (2/3) ...
[2021-05-01 08:23:57,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78aae0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:57, skipping insertion in model container
[2021-05-01 08:23:57,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:57" (3/3) ...
[2021-05-01 08:23:58,025 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound50.c
[2021-05-01 08:23:58,029 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-05-01 08:23:58,032 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 08:23:58,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 08:23:58,064 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 08:23:58,064 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 08:23:58,064 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-05-01 08:23:58,065 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 08:23:58,065 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 08:23:58,065 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 08:23:58,065 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 08:23:58,065 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 08:23:58,079 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 08:23:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:23:58,086 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:58,087 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 08:23:58,088 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:58,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times
[2021-05-01 08:23:58,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:58,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385110404]
[2021-05-01 08:23:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:58,152 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:23:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:23:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:23:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:23:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,382 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 08:23:58,383 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:23:58,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385110404]
[2021-05-01 08:23:58,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385110404] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:23:58,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:23:58,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 08:23:58,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849143531]
[2021-05-01 08:23:58,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 08:23:58,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:23:58,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 08:23:58,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:23:58,397 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 08:23:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:23:58,538 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions.
[2021-05-01 08:23:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 08:23:58,539 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 08:23:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:23:58,544 INFO L225 Difference]: With dead ends: 69
[2021-05-01 08:23:58,544 INFO L226 Difference]: Without dead ends: 33
[2021-05-01 08:23:58,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 08:23:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-05-01 08:23:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2021-05-01 08:23:58,598 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 08:23:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions.
[2021-05-01 08:23:58,600 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28
[2021-05-01 08:23:58,600 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:23:58,600 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions.
[2021-05-01 08:23:58,601 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 08:23:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions.
[2021-05-01 08:23:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-05-01 08:23:58,602 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:58,602 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 08:23:58,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 08:23:58,602 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times
[2021-05-01 08:23:58,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:58,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981273855]
[2021-05-01 08:23:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:58,605 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 08:23:58,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:23:58,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:23:58,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:23:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:23:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:23:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:23:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,689 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 08:23:58,689 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:23:58,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981273855]
[2021-05-01 08:23:58,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981273855] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:23:58,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:23:58,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:23:58,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918894504]
[2021-05-01 08:23:58,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:23:58,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:23:58,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:23:58,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:23:58,691 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 08:23:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:23:58,923 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions.
[2021-05-01 08:23:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:23:58,924 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 08:23:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:23:58,925 INFO L225 Difference]: With dead ends: 46
[2021-05-01 08:23:58,925 INFO L226 Difference]: Without dead ends: 44
[2021-05-01 08:23:58,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:23:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-05-01 08:23:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37.
[2021-05-01 08:23:58,935 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 08:23:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions.
[2021-05-01 08:23:58,936 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28
[2021-05-01 08:23:58,936 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:23:58,936 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions.
[2021-05-01 08:23:58,937 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 08:23:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions.
[2021-05-01 08:23:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-05-01 08:23:58,937 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:58,937 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 08:23:58,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 08:23:58,938 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times
[2021-05-01 08:23:58,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:58,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037843285]
[2021-05-01 08:23:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:58,940 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:58,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:58,968 INFO L142 QuantifierPusher]: treesize reduction 13, result has 40.9 percent of original size
[2021-05-01 08:23:58,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 08:23:58,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:23:58,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 08:23:58,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:58,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 08:23:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:59,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:59,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-05-01 08:23:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:59,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:59,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-05-01 08:23:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:59,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:59,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2021-05-01 08:23:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:59,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2021-05-01 08:23:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 08:23:59,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 08:23:59,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 08:23:59,073 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 08:23:59,073 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2021-05-01 08:23:59,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037843285]
[2021-05-01 08:23:59,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2037843285] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 08:23:59,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 08:23:59,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 08:23:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964246254]
[2021-05-01 08:23:59,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 08:23:59,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-05-01 08:23:59,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 08:23:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 08:23:59,075 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 08:23:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 08:23:59,354 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions.
[2021-05-01 08:23:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 08:23:59,354 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 08:23:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 08:23:59,357 INFO L225 Difference]: With dead ends: 50
[2021-05-01 08:23:59,357 INFO L226 Difference]: Without dead ends: 48
[2021-05-01 08:23:59,358 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 08:23:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-05-01 08:23:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41.
[2021-05-01 08:23:59,378 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 08:23:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions.
[2021-05-01 08:23:59,382 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33
[2021-05-01 08:23:59,382 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 08:23:59,382 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions.
[2021-05-01 08:23:59,382 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 08:23:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions.
[2021-05-01 08:23:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-05-01 08:23:59,384 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 08:23:59,384 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 08:23:59,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 08:23:59,384 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 08:23:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 08:23:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times
[2021-05-01 08:23:59,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-05-01 08:23:59,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115678553]
[2021-05-01 08:23:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 08:23:59,388 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-05-01 08:23:59,411 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-05-01 08:23:59,411 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 08:23:59,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-05-01 08:23:59,422 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-05-01 08:23:59,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:23:59 BoogieIcfgContainer
[2021-05-01 08:23:59,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 08:23:59,423 INFO L168 Benchmark]: Toolchain (without parser) took 1985.83 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 164.6 MB in the beginning and 178.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 43.9 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,424 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.48 ms. Allocated memory is still 199.2 MB. Free memory was 164.4 MB in the beginning and 183.6 MB in the end (delta: -19.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,424 INFO L168 Benchmark]: Boogie Preprocessor took 36.08 ms. Allocated memory is still 199.2 MB. Free memory was 183.6 MB in the beginning and 182.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,425 INFO L168 Benchmark]: RCFGBuilder took 340.69 ms. Allocated memory is still 199.2 MB. Free memory was 182.2 MB in the beginning and 166.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,425 INFO L168 Benchmark]: TraceAbstraction took 1429.73 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 165.8 MB in the beginning and 178.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB.
[2021-05-01 08:23:59,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 174.48 ms. Allocated memory is still 199.2 MB. Free memory was 164.4 MB in the beginning and 183.6 MB in the end (delta: -19.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 36.08 ms. Allocated memory is still 199.2 MB. Free memory was 183.6 MB in the beginning and 182.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 340.69 ms. Allocated memory is still 199.2 MB. Free memory was 182.2 MB in the beginning and 166.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1429.73 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 165.8 MB in the beginning and 178.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 45.5 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] long long r, d, p, q;
[L25] A = __VERIFIER_nondet_unsigned_int()
[L26] CALL assume_abort_if_not(A>=0 && A<=50)
[L12] COND FALSE !(!cond)
[L26] RET assume_abort_if_not(A>=0 && A<=50)
[L27] B = __VERIFIER_nondet_unsigned_int()
[L28] CALL assume_abort_if_not(B>=0 && B<=50)
[L12] COND FALSE !(!cond)
[L28] RET assume_abort_if_not(B>=0 && B<=50)
[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: 1352.2ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 14.9ms, AutomataDifference: 676.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 92 SDslu, 77 SDs, 0 SdLazy, 233 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 301.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 307.8ms 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: 56.3ms 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...